Staring into a ruddy great hole? (6)
I believe the answer is:
gaping
'staring' is the definition.
(thesaurus)
'into a ruddy great hole?' is the wordplay.
I cannot quite see how this works, but
'into' could be 'in' and 'in' is located in the answer.
'a' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for gaping that I've seen before include "Opening mouth wide or staring in wonder" , "Staring open-mouthed" , "Yawning" , "With the mouth wide open, in wonder perhaps" .)