natural-ridge As a command 17 categories below natural-ridge Narrow by landform 11 natural-object 11 place 11 earth-bank 10 sandbank 8 shoal 7 reef 5 coral-reef 4 hill 2 cliff 1 dune 1 island 1 land 1 ledge 1 slope 1 coral-reef 4dune 1earth-bank 10ledge 1reef 5sandbank 8shoal 7atollbarrier-reefbermbluffcayeskergreat-barrier-reefripple-marksandbarseif-dune