Cave

A cave is like a big hole in the ground that people can explore. Caves are often made of rocks, and formed over a long time by water that slowly drips down from the ceiling and makes holes in the ground. Sometimes caves have really cool things inside, like rocks that glow in the dark or pools of water that reflect the light. People like to go into caves with flashlights and helmets to explore and see all the cool things that are hidden in them!