Rock-splitting crack (7)
I believe the answer is:
fissure
(Other definitions for fissure that I've seen before include "Long, narrow crack" , "Split, crack" , "Split - cleavage" , "Cleft" , "Crevice" .)
I believe the answer is:
fissure
(Other definitions for fissure that I've seen before include "Long, narrow crack" , "Split, crack" , "Split - cleavage" , "Cleft" , "Crevice" .)