[SunkenCiv]

The wide and steep entrance channeled sediments and fossils into the cave over a long time period.

Kira Westaway/Macquarie University

An editorially independent anthropology magazine of the Wenner-Gren Foundation & University of Chicago Press

[wildcard_redneck]

I think it was when Marco Polo went over there.

[Tell It Right]

Computer rending of the DNA of earliest human in Laos:

[MIchaelTArchangel]

I suspect they arrived in the 1600s!