Den?

The optional theme of today is "interesting building". As far as I know the home of a fox (family), something they build themselves, is called a den.
I didn't expect the den to have so many entrances. So I am not 100% sure anymore that this is a den. At least it was until some years ago, when I saw foxes disappear into it.
Thanks to BobsBlips for hosting the Wide Wednesday challenge.