A cluster of mountains
a mountain range
A piece of land completely surrounded by water
island
a large area of water completely surrounded by land
lake
A mountain which contains lava.
Volcano
An area of sand at the edge of a sea
beach
A semi-circle of land by the sea
bay
A long and narrow body of water
river
a large hole on the sides of a mountain
cave
An area covered by sand where there is little flora and fauna
desert
water falling down from a height
waterfall