Comments by "Samson Soturian" (@samsonsoturian6013) on "The Fort Builders of Stone Age Siberia | Amnya Cultural Complex" video.

There was a stone Mesoamerican town at the corner where Texas, New Mexico, and Mexico meet. When the Spaniards found it the town was mostly abandoned as the locals mostly hunted the buffalo who drifted farther north over the decades.
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@GenghisVern It's exactly as tendious as it sounds. American pioneers spoke of Indians carving out the inside of a tree trunk to make a canoe using sea shells from the river and/or fire embers to carefully burn away the inside and were impressed what could be done without metal tools. However, that process took days and the Indians very quickly took to trading furs for metal tools as soon as they met Americans.
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Use of stone in Siberia is noteworthy, as this implies this fort predate the iconic taiga forests seen today. No one uses stone in a place where wood is so cheap even in bulk, although in this case there was probably some wood to use along the river.
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"Siberia before aggriculture" is an oxymoron since even today most oblasts grow very little.
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