No bias, mostly with envy
Neat follow up pics even though we got two views looking East! Looking at your area in OvrS, there is a LOT of obsidian examples. I hadn't noticed before but obsidian must knap differently than flint, there seem to be hundreds of flakes to get across the larger ones rather than some flint flakes that go clear across a point in one shot.
Insitu pics from that part of the world are a nice change from firewood ash black, the subsequent backlit shot does it justice.