Yellowstone is a big park in Wyoming.
It has many amazing things.
Old Faithful is a famous geyser.
It erupts every 90 minutes!
The Grand Prismatic Spring is very colorful.
You can see blue, green, and orange water.
There are many animals too.
You can see bison and bears.
The park has hot springs and mud pots.
You should visit different areas.
Yellowstone is in three states: Wyoming, Montana, and Idaho.
It is a great place to explore!