Burrows, craters, tunnel entrances and collapsing walls

What Asset(s) would you like to see included within TaleSpire?
What does it look like, how is it used. Paint us a figurative picture.
Burrow: The open side of a monster lair that dug out of its hive. Crater: the fresh (or old) impact of an asteroid or magic item that fell from the sky. Tunnel entrance: an open wall with broken masonry, loose bricks (some on the floor, with maybe a hammer lying there) like if a construction worker found a secret tunnel when he was remodelling a wall, or a group of burglars used it to enter the castle. Collapsing wall: animated like a door, an old wall, built poorly to cover some nasty secrets long time ago, but it's barely holding up now.

With the burrow and the crater, it would be basically dirt, so it could be placed over any ground and work out just fine. The tunnel entrance should a wall piece to substitute one regular wallpiece, and the collapsing wall it's technically a door that opens, but with a different animation.

What situations would the Asset(s) be useful in?
Descriptions, examples - or show us a literal picture. That works too.
Burrows can paint a pretty good picture that a monster is nearby, it can be completed with nearby eggs, bones, cobwebs or broken trees depending on the size of the monster.

Craters can point to an object that fell from the sky (a weapon from the gods, or even a fallen celestial creature) it could be completed with bent trees for the surrounding area or smoke columns

The tunnel entrance is a fantastic way for the DM to change into the cavern/mine set from the castle/regular interior one, it provides exposition an world building.

Same with the collapsing wall, due to it's nature it can be used and work fine with any interior set, maybe it's an old wall behind a newer one in a house, or a dead tunnel in a mine.

The point of this assets it's to provide context and an excuse to change tiles/maps

Additional Thoughts/Details

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