Thoudands of years ago in the Pleostocene?
"The Pleistocene Epoch follows the Pliocene Epoch and is followed by the Holocene Epoch. The Pleistocene is the first epoch of the Quaternary Period or 6th epoch of the Cenozoic Era.[1] The end of the Pleistocene corresponds with the retreat of the last continental glacier. It also corresponds with the end of the Paleolithic age used in archaeology."