rock As a command 20 categories below rock Narrow by boulder 3 outcrop 2 hill 1 landform 1 place 1 boulder 3outcrop 2achondritebedrockchondriteclastclastic-rockglacial-boulderigneous-intrusionigneous-silloutthrustpebblepetrifactionriver-bouldershore-bouldertor-hilltor-rockwall-rockwhinstonexenolith