abysm
abyss
alveolation
alveolus
arroyo
autolithograph
be a printmaker
bore
box canyon
breach
break
burrow
canal
canalize
canyon
carve
cavity
chamfer
channel
chap
character
chasm
check
chimney
chink
chisel
cleave
cleft
cleuch
clough
cocker
cockle
col
corrugate
corrugation
coulee
couloir
crack
crankle
cranny
crease
crevasse
crevice
cribble
crimp
crimple
crinkle
cut
cut into
delve
dig
fold
fold up
turn up
turnover
furrowed
furrowing
furrows
crater
fissure
forehead
gash
groove
hollow
mound
oval
patch
ravine
ridge
rut
scar
scratch
seam
slash
stain
streak
stripe
trench
wrinkle
boro
burro
burrough
pero
thorough