Im currently playing the Cragheart and i wonder with all that boulder "production" from Rock Slide and Avalanche if there is a limitation because you run out of boulder tokens pretty fast (i think there are just 5 1-tile Boulders in the game) Is there any official statement about this or just Houseruling?
I have no idea if boulder tokens are limited but at no point does it say the the Cragheart creates only boulders. It only says he makes obstacles. So I have no problem with him creating a stump, log, tree, bush, or even bookshelf.
Personally I've just used the rough terrain rubble tiles as they look very similar to the boulders.