This a hot spring that releases steam and water.

I am the most useful mineral found in the Rocky Mountains.

This identifies the point at which trees can't grow.

I am the oldest national park.

This occurs when rocks are melted into a liquid.

There is more of me at the top of a mountain than at the bottom.

This is the waste material created when rocks are melted.

I am why the Great Salt Lake has salt water.

This separates the rivers that flow east with the rivers that flow west.

I am why Krummholz trees are bent and crooked.