Pull up by church in ravine (5)
I believe the answer is:
gulch
'ravine' is the definition.
(I know that gulch is a type of gorge)
'pull up by church' is the wordplay.
'pull' becomes 'lug' (I've seen this before).
'up by' says the letters should be written in reverse.
'church' becomes 'ch' (common abbreviation).
'lug' written backwards gives 'gul'.
'gul'+'ch'='GULCH'
'in' acts as a link.
(Other definitions for gulch that I've seen before include "A narrow gorge with a stream running through it" , "Narrow gorge with a stream in North America" , "Narrow ravine (US)" , "valley" , "Narrow ravine (Amer.)" .)