a chain of mountains.
a mountain range
a piece of land surrounded by water on three sides and land from one side.
a peninsula
a piece of land surrounded by water bodies.
an island
flow of lava along with gases and ashes.
a volcanic eruption
a slow moving river of ice and snow.
a glacier
a plain land surrounded by hills or mountains.
valley
a flat, elevated landform that rises sharply above the surrounding area
a plateau
a narrow valley between hills or mountains, typically with steep rocky walls and a stream running through it
gorge
mass of rock that rises very high and is almost vertical, or straight up-and-down.
a cliff
ocean moving inwards towards the land.
estuary
new land created by the sediments from the river.
delta
a flat land mostly covered by grasses.
a plain or a grassland