Thanks guys.
1: just bought rocky outcropping molds for plaster, will make rock base look much better!
2: Yes, kinda NW Frontierish, but the short mountain, and the angled architexture hopefully is Africa enough to be a convincing The Sword in Africa piece.
3:using cheap Dolluh Tred foamboard. paper sides peel right off, making it easy to scribe in exposed brick with black ball point
3: