So, moving from the south, one finds shelter (3)
I believe the answer is:
hut
'shelter' is the definition.
(hut is a kind of shelter)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for hut that I've seen before include "Small, simple shelter" , "Small building or shelter" , "Peter Nissen's ubiquitous structure" , "Small crude shelter" , "Simple building" .)