Map showing the homeland of the Indo-European language family according to the steppe hypothesis (dark green), within the approximate present-day distribution of Indo-European languages in Eurasia (light green). Dotted/striped areas indicate where multilingualism with Non-Indo-European languages is common.
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 Georgia (orthographic--projection).svg: 
Indo-European branches map.svg: 
Extent of the Yamnaya culture, after Haak et al. 2015:Haak, Wolfgang (2015). "Massive migration from the steppe was a source for Indo-European languages in Europe". Nature 522 (7555): 207–211. DOI:10.1038/nature14317.
Joe Roe