a large crack in the earth caused by a river or earthquakes

large, tall rock that extends into the air; taller than a hill

mound of earth with rounded top; smaller than a mountain

thin strip of land that connects two larger land areas

thin strip of land that extends into a body of water

low land between hills and mountains

opening in the earth's crust from which lava or ash escapes

large area of flat land

large area of flatland that is higher than the land around it