Proto-Indo-European is spoken

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The reconstructed ancestor of the Indo-European languages was spoken by a real community at a date conventionally placed in the fourth to third millennium BCE, and in a place that remains the most argued question in the field. The linguistic evidence for the date is indirect and derives from the reconstructed vocabulary: securely recoverable terms for wheeled transport and for wool and dairying place the proto-language after those technologies existed, giving an earliest bound that archaeology can supply. Both the date and the location are stated here as contested, not resolved; the catalogue timeline for this Journey gives the same approximate date with the same caveat.

A node is not a place. Drawing it on a map would assert something about the world that no stored fact supports.