In depend of the Municipality of Sarmiento. It's situated in the historic building of the old train station on the 20 June street number 114. It was inaugurated in 1973 and reinstalled in its new place in 2004. This modern museum show us importants vestiges of the Tehuelche and Mapuches culture that habited the valley of Sermiento and its environs. About 24000 pieces, contribute with a variated and very interesting lithic material. Its distribution show us the most primitives cultures and the fusion with the colonists coming from europe to this valley in 1897. A true richness of Museum is the first Argentine flag hoisted in the Colonia, maked with cloths of sheets and its painted sun are a technical of saturation with tints extracted of the roots of Calafate maked by aborigines woman.