1: Kingdom very mountainous at first (5)
4: Vet theatre opening 8-down (3)
6: Road leading into dismal swamp (5)
7: Wander around inside territory (3)
8: Fork prong holds passion fruit (9)
10: Age of neo-catastrophe? (3)
12: Studio sign initially obscured by swirling rain (2,3)
14: Freshen the atmosphere (3)
15: Change men in commercial (5)