The near vertical face of a redstone cliff with huge overhanging boulders and black lichen covering much of the face.

The near vertical face of another redstone cliff with massive slabs of overhanging rock
 
The near vertical face of another redstone cliff with a massive pointed slab of overhanging rock, like an arrowhead, and a Ponderosa pinetree perched at the edge of the clifftop; this face has more green lichen covering it.
 
The near vertical face of another redstone cliff further down the way, again with massive slabs of overhanging rock above. This portion of the cliff is a much more orange color as there is very little lichen on it.

And here's a view of one of the cliff faces across the valley.
A view of the cliff face across the valley. A beautiful pair of redtail hawks nests there.