Hibernation Dens

[Serpentine99]

I'm curious if anyone has found a snake Hibernation Den. If so, where did you find it, what did it look like, and what snakes or animals where in it?
PS: Am I asking to much?

[stonyloam]

Well there is one under the floor of my sunroom. They (garter, eastern milk and brown snakes) come in through a hole in the morter and spend the winter under the concrete slab. They also winter under the concrete walkway around the pool. They live in the mouse and chipmunk holes that are under the walkway and the pool water apparently keeps the ground from freezing below the surface around the pool. They are all over the place in the spring.

[ssssnakeluvr]

I know of one here where I live, wandering garter den, last year I found a couple yellow bellied racers there also. It's a pile of rocks along an old road....