He added the cave as an extra, just to add something different, and i like it.
For the cave i was thinking of possible scenarios such as.........
- a captured girl is going to be sacrificed to some creature, a rescue mission
- i could put a dragon or a hydra in the cave entrance. The mission is to kill the creature and destroy all it's eggs before they hatch
- empire/dwarf cannons will be able to sit on various flat areas, maybe that cave is a side entrance to a dwarven kingdom
For the wall itself i'm going to use the 2 end pieces on the side of the table, as a gap between some mountains. I'd like to get a 10mm castle and use the cliff walls as the back, so the castle is embedded into the rock face. It would also be good to have some sort of fortification in between the 2 end pieces, blocking the path