Zygon cave

The Zygon cave was a cave within which 3 Zygons resided, with one jumping up and down, one walking left and right, and one mostly standing still.

After verifying that it hadn't materialised in the Weeping Angel graveyard, Little Miss Dee checked the Zygon cave for the TARDIS, as she had heard it materialising somewhere. She didn't find the TARDIS, as "only Zygons lived there" and, when they tried to negotiate a peace deal in which they 'could live happily amongst the humans', Dee thought "Uh oh, not again - that's one for the Doctor" and left quietly, going to the Cybermen spaceship. (NOTVALID: Doctor Who meets Mr. Men)