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volcanic rock
basalt; whin(stone)
lava tube
shale
igneous rock
sedimentary rock
clay rock; slate
gneiss
andesite
Geology
tuff
sheer cliff
schist
porphyry
diorite
strangely shaped rocks and bizarre stones
mudstone
lava dome
lava tunnel
base rock; country rock; gangue; host rock; mother rock; parent rock; wall rock
aqueous rock
precipice; cliff
basaltic
quartzite
pillow lava