The cliffside roads can only be placed on level below ground floor,
or on water top cliffs (mountain type 5).
But even there not all blocks can be placed.
E.g. blocks 6-7-3, 6-3-3 don't want to be placed althought the mountain shape basically should allow it.
https://www.dropbox.com/s/15znwpcgyfvtb ... _Water.png
Furtheremore none of the cliffside roads can be placed on cliff mountains that are on top of the earth (mountains type 2)
