"Suggestions are always welcome.." Yes!
Now, how about a water tower?
Wait, whoa! If you take out the enemy water supply--
they might just have to come out of hiding! LOL
What about a tall brick chimney or grain stack?
One of the greatest potentials to this method of design
is it seems to make things that crumble, and then you
could essentially re-create the essence of digging.
This is great kind of stuff HarryWever.