Stalactite site (4)
I believe the answer is:
cave
'stalactite site' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for cave that I've seen before include "Warning - grotto" , "Natural underground chamber" , "Natural underground space" , "Aladdin, Fingal, had one" , "Hollow in a cliff or underground" .)