Some questions here are aimed at times or events known only or mostly from archaeological evidence, and some frowned upon asking such questions here. Now there is no good alternative so it's completely OK, but wouldn't it be nice to have Archaeology.SE as an alternative for such questions?
Here is the Archaeology proposal on Area51.
EDIT: the Archaeology proposal was restarted. Now it's even longer from reaching beta, but if the proposal attracts few experts (as well as many others), it can make it in the end.