types:
caverne
a geological formation consisting of an underground enclosure with access from the surface of the ground or from the sea
massif
a block of the earth's crust bounded by faults and shifted to form peaks of a mountain range
pente
an elevated geological formation
filon,
veine
a layer of ore between layers of rock
montée
an upward slope or grade (as in a road)
berge,
rive
sloping land (especially the slope beside a body of water)
bombement
a slope in the turn of a road or track; the outside is higher than the inside in order to reduce the effects of centrifugal force
bassin
a natural depression in the surface of the land often with a lake at the bottom of it
lit
a depression forming the ground under a body of water
caverne
a large cave or a large chamber in a cave
cratère
a bowl-shaped depression formed by the impact of a meteorite or bomb
geyser
a spring that discharges hot water and steam
glacier
a slowly moving mass of ice
colline
a local and well-defined elevation of the land
iceberg
a large mass of ice floating at sea; usually broken off of a polar glacier
banquise
a large flat mass of ice (larger than an ice floe) floating at sea
banquise
a flat mass of ice (smaller than an ice field) floating at sea
mont,
montagne
a land mass that projects well above its surroundings; higher than a hill
cap,
promontoire
a natural elevation (especially a rocky one that juts out into the sea)
arête,
crête
a long narrow natural elevation or striation
renflement
a rounded elevation (especially one on an ocean floor)
auge
a narrow depression (as in the earth or between ocean waves or in the ocean bed)
vallée
a long depression in the surface of the land that usually contains a river