A man buried in Russia in the Eneolithic era

The Khvalynsk culture, part of the broader Eneolithic period, is considered a significant precursor to the Indo-European cultures of the Pontic-Caspian steppe. Flourishing around 4900–3500 BCE, this culture emerged in the Volga River region in what is now Russia. The Khvalynsk culture is often linked with early Proto-Indo-European languages and peoples due to its geographic location and certain cultural attributes.
Geographic and Environmental Context
The Khvalynsk culture occupied the expansive landscapes of the Eurasian steppe, characterized by wide-open plains that are conducive to pastoralism. This environment is marked by continental climate conditions, with cold winters and hot summers, a factor influencing the economic activities of the people.
Economy and Subsistence
The economy of the Khvalynsk culture was primarily based on pastoralism, with an emphasis on cattle, sheep, and goat herding. Animal husbandry played a crucial role, not only in diet but also in social structure and ritual practices. Evidence suggests a mixed subsistence strategy that included some horticulture, hunting, and fishing, with settlements often located near rivers, providing access to aquatic resources.
Settlement Patterns
The settlements of the Khvalynsk culture were relatively small and scattered. Dwellings exhibited some degree of permanence, with semi-subterranean structures suggesting adaptations to the harsh climate. These settlements often were located near burial sites, reflecting a connection between the living and the dead in their spatial organization.
Material Culture
The material culture of Khvalynsk is distinguished by its pottery, tools, and burial goods. Pottery from this culture typically features simple designs, often with cord-impressed patterns. Stone and bone tools were prevalent, including arrowheads, scrapers, and knives that suggest a continuation of some Mesolithic traditions.
Burial Practices
One of the most distinctive aspects of the Khvalynsk culture is its burial practices. Khvalynsk graves often contained multiple individuals, possibly indicating complex kinship or social structures. The burials are accompanied by rich grave goods, including tools, ornaments, and particularly the presence of animal remains, which hint at ritualistic sacrificial practices. Some burials exhibit red ochre use, linking them to wider Eurasian burial traditions.
Social and Cultural Aspects
The Khvalynsk culture is believed to have a hierarchical society, inferred from the differing richness and complexity of their graves. This stratification points to emerging social differentiation possibly linked to wealth accumulation and control over livestock—a valuable commodity in the steppes.
Connections to Proto-Indo-European Theories
The Khvalynsk culture is often discussed in the context of Proto-Indo-European origins due to its geographic location and temporal alignment with linguistic and genetic models. Although direct evidence linking Khvalynsk to Indo-European languages remains elusive, the culture shares several characteristics with later Indo-European groups, such as pastoralism, social hierarchy, and particular mortuary practices.
Genetic and Archaeological Insights
Recent genetic studies have provided additional insights, revealing that the Khvalynsk population had ancestral components common with other steppe groups, supporting theories of movements and interactions across the region, potentially contributing to the dissemination of Proto-Indo-European languages.
In summary, the Eneolithic Khvalynsk culture of Russia appears as a pivotal culture in prehistoric Eurasia, representing societal structures, economic practices, and cultural traditions that may have influenced subsequent cultures across the steppes, including those associated with the spread of Indo-European peoples.
Sample ID | Culture/Period | Date | Location | Action |
---|---|---|---|---|
I0234 | Srubnaya Culture | 1850 BCE | Samara Oblast. Volga River Valley. Samara Steppes. Rozhdestveno I, Russia | View |
I0126 | Middle Bronze Poltavka | 2867 BCE | Samara Oblast. Volga River Valley. Kutuluk River. Kutuluk III, Russia | View |
I0432 | Middle Bronze Poltavka | 2925 BCE | Samara Oblast. Sok River. Potapovka I, Russia | View |
I0434 | Eneolithic Khvalynsk Culture, Russia | 5198 BCE | Samara Oblast. Volga River Valley. Khvalynsk II, Russia | View |
I0433 | Eneolithic Khvalynsk Culture, Russia | 4697 BCE | Samara Oblast. Volga River Valley. Khvalynsk II, Russia | View |
I0122 | Eneolithic Khvalynsk Culture, Russia | 4936 BCE | Samara Oblast. Volga River Valley. Khvalynsk II, Russia | View |
I0124 | Hunter-Gatherer Samara, Russia | 5660 BCE | Samara Oblast. Volga River Valley. Sok River. Lebyazhinka, Russia | View |
I0370 | Early Bronze Samara Yamnaya | 3300 BCE | Samara Oblast. Volga River Valley. Eastern Orenburg. Pre-Ural steppe. Ishkinovka I, Russia | View |
I0441 | Early Bronze Samara Yamnaya | 3010 BCE | Samara Oblast. Volga River Valley. Buzuluk. Kurmanaevka III, Russia | View |
I0444 | Early Bronze Samara Yamnaya | 3335 BCE | Samara Oblast. Volga River Valley. Kutuluk River. Kutuluk, Russia | View |
I0439 | Early Bronze Samara Yamnaya | 3322 BCE | Samara Oblast. Volga River Valley. Sok River. Lopatino I, Russia | View |
I0357 | Early Bronze Samara Yamnaya | 3093 BCE | Samara Oblast. Volga River Valley. Sok River. Lopatino I, Russia | View |
I0429 | Early Bronze Samara Yamnaya | 3339 BCE | Samara Oblast. Volga River Valley. Sok River. Lopatino I, Russia | View |
I1282 | Chalcolithic Spain | 2900 BCE | Burgos. Atapuerca. El Mirador Cave, Spain | View |
I1302 | Chalcolithic Spain | 2900 BCE | Burgos. Atapuerca. El Mirador Cave, Spain | View |
I1276 | Chalcolithic Spain | 2900 BCE | Burgos. Atapuerca. El Mirador Cave, Spain | View |
I1284 | Chalcolithic Spain | 2900 BCE | Burgos. Atapuerca. El Mirador Cave, Spain | View |
I1274 | Chalcolithic Spain | 2900 BCE | Burgos. Atapuerca. El Mirador Cave, Spain | View |
I1280 | Chalcolithic Spain | 2900 BCE | Burgos. Atapuerca. El Mirador Cave, Spain | View |
I1314 | Chalcolithic Spain | 2900 BCE | Burgos. Atapuerca. El Mirador Cave, Spain | View |
I1277 | Chalcolithic Spain | 2570 BCE | Burgos. Atapuerca. El Mirador Cave, Spain | View |
I1272 | Chalcolithic Spain | 2857 BCE | Burgos. Atapuerca. El Mirador Cave, Spain | View |
I1281 | Chalcolithic Spain | 2867 BCE | Burgos. Atapuerca. El Mirador Cave, Spain | View |
I1300 | Chalcolithic Spain | 2900 BCE | Burgos. Atapuerca. El Mirador Cave, Spain | View |
I0807 | Middle Neolithic Baalberge Culture, Germany | 3977 BCE | Esperstedt, Germany | View |
I0559 | Middle Neolithic Baalberge Culture, Germany | 3646 BCE | Quedlinburg Site IX, Germany | View |
I0560 | Middle Neolithic Baalberge Culture, Germany | 3637 BCE | Quedlinburg Site IX, Germany | View |
I1546 | Bell Beaker Culture, Germany | 2500 BCE | Benzingerode-Heimburg, Germany | View |
I0806 | Bell Beaker Culture, Germany | 2433 BCE | Quedlinburg Site VII, Germany | View |
I0805 | Bell Beaker Culture, Germany | 2465 BCE | Quedlinburg Site VII, Germany | View |
I0113 | Bell Beaker Culture, Germany | 2396 BCE | Quedlinburg Site XII, Germany | View |
I0112 | Bell Beaker Culture, Germany | 2455 BCE | Quedlinburg Site XII, Germany | View |
I1530 | Bell Beaker Culture, Germany | 2456 BCE | Rothenschirmbach, Germany | View |
I0111 | Bell Beaker Culture, Germany | 2474 BCE | Rothenschirmbach, Germany | View |
I0108 | Bell Beaker Culture, Germany | 2575 BCE | Rothenschirmbach, Germany | View |
I0171 | Late Neolithic Benzigerode-Heimburg, Germany | 2288 BCE | Benzingerode-Heimburg, Germany | View |
I0059 | Late Neolithic Benzigerode-Heimburg, Germany | 2343 BCE | Benzingerode-Heimburg, Germany | View |
I1542 | Corded Ware Culture, Germany | 2500 BCE | Esperstedt, Germany | View |
I1536 | Corded Ware Culture, Germany | 2500 BCE | Esperstedt, Germany | View |
I1544 | Corded Ware Culture, Germany | 2500 BCE | Esperstedt, Germany | View |
I1538 | Corded Ware Culture, Germany | 2500 BCE | Esperstedt, Germany | View |
I1539 | Corded Ware Culture, Germany | 2630 BCE | Esperstedt, Germany | View |
I0106 | Corded Ware Culture, Germany | 2461 BCE | Esperstedt, Germany | View |
I1540 | Corded Ware Culture, Germany | 2500 BCE | Esperstedt, Germany | View |
I1541 | Corded Ware Culture, Germany | 2500 BCE | Esperstedt, Germany | View |
I1532 | Corded Ware Culture, Germany | 2500 BCE | Esperstedt, Germany | View |
I0049 | Corded Ware Culture, Germany | 2463 BCE | Esperstedt, Germany | View |
I0211 | Hunter-Gatherer Karelia, Russia | 7050 BCE | Karelia. Yuzhnyy Oleni Ostrov, Russia | View |
I0061 | Hunter-Gatherer Karelia, Russia | 7050 BCE | Karelia. Yuzhnyy Oleni Ostrov, Russia | View |
I0550 | Late Neolithic Karsdorf, Germany | 2572 BCE | Karsdorf, Germany | View |
I0797 | Early Neolithic Linear Pottery Culture, Germany | 5500 BCE | Karsdorf, Germany | View |
I0795 | Early Neolithic Linear Pottery Culture, Germany | 5215 BCE | Karsdorf, Germany | View |
I0176 | Middle Neolithic Linear Pottery Culture, Hungary | 5209 BCE | Szemely-Hegyes, Hungary | View |
I0551 | Middle Neolithic Salzmuende Culture, Germany | 3400 BCE | Salzmünde-Schiepzig, Germany | View |
I0409 | Early Neolithic Spain | 5312 BCE | Els Trocs, Spain | View |
I0411 | Early Neolithic Spain | 5298 BCE | Els Trocs, Spain | View |
I0405 | Middle to Late Neolithic Spain | 3900 BCE | La Mina, Spain | View |
I0174 | Early Neolithic Starčevo Culture 1, Hungary | 5712 BCE | Alsonyek-Bataszek. Mérnöki telep, Hungary | View |
I0115 | Early Bronze Age Unetice Culture, Germany | 1959 BCE | Esperstedt, Germany | View |
I0117 | Early Bronze Age Unetice Culture, Germany | 2276 BCE | Esperstedt, Germany | View |
I0804 | Early Bronze Age Unetice Culture, Germany | 2139 BCE | Eulau, Germany | View |
I0803 | Early Bronze Age Unetice Culture, Germany | 2135 BCE | Eulau, Germany | View |
I0164 | Early Bronze Age Unetice Culture, Germany | 2027 BCE | Quedlinburg Site VIII, Germany | View |
I0114 | Early Bronze Age Unetice Culture, Germany | 2141 BCE | Esperstedt, Germany | View |
I0022 | Early Neolithic Linear Pottery Culture, Germany | 5500 BCE | Baden-Württemberg. Stuttgart-Mühlhausen. Viesenhaeuser Hof, Germany | View |
I0026 | Early Neolithic Linear Pottery Culture, Germany | 5500 BCE | Baden-Württemberg. Stuttgart-Mühlhausen. Viesenhaeuser Hof, Germany | View |
I0013 | Hunter-Gatherer Motala, Sweden | 5966 BCE | Motala. Kanaljorden, Sweden | View |
I0011 | Hunter-Gatherer Motala, Sweden | 5721 BCE | Motala. Kanaljorden, Sweden | View |
I0015 | Hunter-Gatherer Motala, Sweden | 5967 BCE | Motala. Kanaljorden, Sweden | View |
I0012 | Hunter-Gatherer Motala, Sweden | 5715 BCE | Motala. Kanaljorden, Sweden | View |
I0014 | Hunter-Gatherer Motala, Sweden | 5885 BCE | Motala. Kanaljorden, Sweden | View |
I0017 | Hunter-Gatherer Motala, Sweden | 5722 BCE | Motala. Kanaljorden, Sweden | View |
I1508 | Early Neolithic Körös Culture, Hungary | 5716 BCE | Berettyóújfalu-Morotva-Liget, Hungary | View |
I1500 | Middle Neolithic Alföld Linear Pottery Culture, Hungary | 5301 BCE | Kompolt-Kigyoser, Hungary | View |
I1100 | Neolithic Turkey | 6500 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I1102 | Neolithic Turkey | 6500 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I1099 | Neolithic Turkey | 6500 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I1103 | Neolithic Turkey | 6500 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I1101 | Neolithic Turkey | 6500 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I1097 | Neolithic Turkey | 6420 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I0744 | Neolithic Turkey | 6400 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I1096 | Neolithic Turkey | 6500 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I1098 | Neolithic Turkey | 6419 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I0708 | Neolithic Turkey | 6224 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I0745 | Neolithic Turkey | 6387 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I0746 | Neolithic Turkey | 6070 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I0707 | Neolithic Turkey | 6225 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I0709 | Neolithic Turkey | 6223 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I0725 | Neolithic Turkey | 6400 BCE | Menteşe, Turkey | View |
I0736 | Neolithic Turkey | 6500 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I1499 | Middle Neolithic Alföld Linear Pottery Culture Bükk Group, Hungary | 5286 BCE | Garadna, Hungary | View |
I1502 | Early Bronze Age Makó Culture, Hungary | 2195 BCE | Kompolt-Kigyoser, Hungary | View |
I1497 | Late Chalcolithic Baden Culture, Hungary | 3320 BCE | Apc-Berekalya I, Hungary | View |
I1495 | Late Neolithic Lengyel Culture, Hungary | 4496 BCE | Apc-Berekalya I, Hungary | View |
I1498 | Middle Neolithic Alföld Linear Pottery Culture, Hungary | 5297 BCE | Debrecen Tocopart Erdoalja, Hungary | View |
I1507 | Early Neolithic Hunter-Gatherer Körös Culture, Hungary | 5788 BCE | Tiszaszolos-Domaháza, Hungary | View |
I1496 | Middle Neolithic Linear Pottery Culture, Hungary | 5211 BCE | Apc-Berekalya I, Hungary | View |
I1505 | Middle Neolithic Alföld Linear Pottery Culture, Hungary | 5210 BCE | Polgár-Ferenci hát. M3-31, Hungary | View |
I1271 | Chalcolithic Spain | 2900 BCE | Burgos. Atapuerca. El Mirador Cave, Spain | View |
I1303 | Chalcolithic Spain | 2900 BCE | Burgos. Atapuerca. El Mirador Cave, Spain | View |
I1549 | Bell Beaker Culture, Germany | 2500 BCE | Benzingerode-Heimburg, Germany | View |
I0407 | Middle to Late Neolithic Spain | 3900 BCE | La Mina, Spain | View |
I0025 | Early Neolithic Linear Pottery Culture, Germany | 5500 BCE | Baden-Württemberg. Stuttgart-Mühlhausen. Viesenhaeuser Hof, Germany | View |
I0247 | Questionable Iron Age Scythian, Russia | 385 BCE | Samara Oblast. Volga River Valley. Volga Steppes. Nadezhdinka, Russia | View |
I0423 | Srubnaya Culture | 1850 BCE | Samara Oblast. Volga River Valley. Samara River. Barinovka I, Russia | View |
I0443 | Early Bronze Samara Yamnaya | 3300 BCE | Samara Oblast. Volga River Valley. Sok River. Lopatino II, Russia | View |
I0726 | Neolithic Turkey | 6400 BCE | Menteşe, Turkey | View |
I0103 | Corded Ware Culture, Germany | 2617 BCE | Esperstedt, Germany | View |
I0172 | Middle Neolithic Esperstedt, Germany | 3363 BCE | Esperstedt, Germany | View |
I0408 | Middle to Late Neolithic Spain | 3895 BCE | La Mina, Spain | View |
I0412 | Early Neolithic Spain | 5309 BCE | Els Trocs, Spain | View |
I0054 | Early Neolithic Linear Pottery Culture, Germany | 5216 BCE | Unterwiederstedt, Germany | View |
I0104 | Corded Ware Culture, Germany | 2563 BCE | Esperstedt, Germany | View |
I0116 | Early Bronze Age Unetice Culture, Germany | 2137 BCE | Esperstedt, Germany | View |
I0118 | Late Neolithic Alberstedt, Germany | 2469 BCE | Alberstedt, Germany | View |
I0406 | Middle to Late Neolithic Spain | 3900 BCE | La Mina, Spain | View |
I0410 | Early Neolithic Spain | 5298 BCE | Els Trocs, Spain | View |
I0413 | Early Neolithic Spain | 5304 BCE | Els Trocs, Spain | View |
I0235 | Srubnaya Culture | 1850 BCE | Samara Oblast. Volga River Valley. Samara Steppes. Rozhdestveno I, Russia | View |
I0374 | Middle Bronze Poltavka | 2800 BCE | Samara Oblast. Volga River Valley. Samara River. Nikolaevka III, Russia | View |
I1583 | Neolithic Turkey | 6424 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I0581 | Chalcolithic Spain | 2900 BCE | Burgos. Atapuerca. El Mirador Cave, Spain | View |
I0440 | Middle Bronze Poltavka | 2887 BCE | Samara Oblast. Volga River Valley. Sok River. Lopatino II, Russia | View |
I0371 | Middle Bronze Poltavka | 2871 BCE | Samara Oblast. Volga River Valley. Sok River. Grachevka, Russia | View |
I0438 | Early Bronze Samara Yamnaya | 3020 BCE | Samara Oblast. Volga River Valley. Samara River. Luzkhi I, Russia | View |
I0418 | Middle Bronze Poltavka | 2131 BCE | Samara Oblast. Volga River Valley. Samara River. Utyevka VI, Russia | View |
I0099 | Late Bronze Age Halberstadt, Germany | 1202 BCE | Halberstadt-Sonntagsfeld, Germany | View |
I0047 | Early Bronze Age Unetice Culture, Germany | 2116 BCE | Halberstadt-Sonntagsfeld, Germany | View |
I1534 | Corded Ware Culture, Germany | 2500 BCE | Esperstedt, Germany | View |
I0060 | Bell Beaker Culture, Germany | 2404 BCE | Rothenschirmbach, Germany | View |
I0723 | Neolithic Turkey | 6008 BCE | Menteşe, Turkey | View |
I0724 | Neolithic Turkey | 6400 BCE | Menteşe, Turkey | View |
I0727 | Neolithic Turkey | 6400 BCE | Menteşe, Turkey | View |
I1580 | Neolithic Turkey | 6381 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I1581 | Neolithic Turkey | 6386 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I1585 | Neolithic Turkey | 6217 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I1579 | Neolithic Turkey | 6221 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I0854 | Neolithic Turkey | 6228 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View |
I0581 | 2900 BCE | Burgos. Atapuerca. El Mirador Cave, Spain | View | |
I0440 | 2887 BCE | Samara Oblast. Volga River Valley. Sok River. Lopatino II, Russia | View | |
I0418 | 2131 BCE | Samara Oblast. Volga River Valley. Samara River. Utyevka VI, Russia | View | |
I0438 | 3020 BCE | Samara Oblast. Volga River Valley. Samara River. Luzkhi I, Russia | View | |
I0585 | 5982 BCE | Leon. La Brana-Arintero, Spain | View | |
I1534 | 2500 BCE | Esperstedt, Germany | View | |
I1504 | 987 BCE | Ludas-Varjú dűlő, Hungary | View | |
I0099 | 1202 BCE | Halberstadt-Sonntagsfeld, Germany | View | |
I0047 | 2116 BCE | Halberstadt-Sonntagsfeld, Germany | View | |
I1579 | 6221 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View | |
I1581 | 6386 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View | |
I1580 | 6381 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View | |
I1585 | 6217 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View | |
I1583 | 6424 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View | |
I0727 | 6400 BCE | Menteşe, Turkey | View | |
I0724 | 6400 BCE | Menteşe, Turkey | View | |
I0854 | 6228 BCE | Northwest Anatolia. Marmara. Barcın, Turkey | View | |
I0723 | 6008 BCE | Menteşe, Turkey | View | |
I0371 | 2871 BCE | Samara Oblast. Volga River Valley. Sok River. Grachevka, Russia | View | |
I0060 | 2404 BCE | Rothenschirmbach, Germany | View |
Sample ID | Culture/Period | Date | Location | Action |
---|---|---|---|---|
I0434 | Eneolithic Khvalynsk Culture, Russia | 5198 BCE | Samara Oblast. Volga River Valley. Khvalynsk II, Russia | View |
I0433 | Eneolithic Khvalynsk Culture, Russia | 4697 BCE | Samara Oblast. Volga River Valley. Khvalynsk II, Russia | View |
I0122 | Eneolithic Khvalynsk Culture, Russia | 4936 BCE | Samara Oblast. Volga River Valley. Khvalynsk II, Russia | View |
Ancient genetic admixture analysis compares the DNA profile of this individual (I0434) with present-day reference populations. These results show what percentage of the individual's genetic makeup resembles ancient populations from different geographic regions.
Modern genetic admixture analysis compares the DNA profile of this individual (I0434) with present-day reference populations. These results show what percentage of the individual's genetic makeup resembles modern populations from different geographic regions.
These results complement the ancient ancestry components shown in the previous section, offering a different perspective on the individual's genetic profile by comparing it with modern reference populations rather than prehistoric ancestral groups.
The G25 coordinates for the sample I0434 are as follows. You can analyze its admixture using G25 Studio.
I0434,0.10800276,0.03555124,0.02953144,0.03948114,-0.02516518,0.00817086,0.01311648,0.00817322,-0.02602698,-0.03441556,0.00895198,-0.00459042,0.00910668,-0.01057834,-0.00876766,-0.01088688,-0.00975274,-0.00208616,-0.01070062,-0.01221544,-0.00210378,0.00562698,-0.01205414,0.00636054,-0.00492257
Genome-wide patterns of selection in 230 ancient Eurasians
Ancient DNA makes it possible to observe natural selection directly by analysing samples from populations before, during and after adaptation events. Here we report a genome-wide scan for selection using ancient DNA, capitalizing on the largest ancient DNA data set yet assembled: 230 West Eurasians who lived between 6500 and 300 bc, including 163 with newly reported data. The new samples include, to our knowledge, the first genome-wide ancient DNA from Anatolian Neolithic farmers, whose genetic material we obtained by extracting from petrous bones, and who we show were members of the population that was the source of Europe's first farmers. We also report a transect of the steppe region in Samara between 5600 and 300 bc, which allows us to identify admixture into the steppe from at least two external sources. We detect selection at loci associated with diet, pigmentation and immunity, and two independent episodes of selection on height.