11. Back side of muskrat feeder hut

Note the vent hole and the chewed stick.

 

I found this description online of a muskrat feeder hut:

 

"Food is not stored for winter use, so they must dig roots and tubers from beneath the ice, returning to their house and burrow to feed. If food sources are too far from the house, a feeding shelter called a “push-up” is built on the ice. A similar feeding platform - a raft consisting of discarded plant food - is constructed for summer use."

 

This one was built not directly on the ice itself, but on an offshore rock.

 

Done