Terrain Interaction?

re: underground awesomeness:

Will there be populated underground dungeons, abandoned structures?5 -
Livestream - 30:50 ]

“All of those sound like great ideas for the dwarves, certainly not
before the release, we’re trying to focus on the core above ground
city building, crafting, defending game … there might be abandoned
structures above ground, they might be something you bump into … which
may have cool artifacts etc.”.