The name of large caves.
cavern
Natural flow of water across the land into the sea or a lake.
river
A body of water surrounded by land.
lake
A hill of sand near a beach or in a desert.
dunes
A narrow piece of land connecting two larger areas of land with water on both sides.
isthmus
It's similar to a gulf, but it is smaller.
bay
Large area covered with lots of trees where different animals live.
jungle/forest
The top of a mountain.
peak
