A fire lookout is a place where people go to keep an eye on the forest and make sure there aren't any fires happening. It's like a big treehouse with windows so people can see all around them. The lookout person sits inside and watches for any smoke or flames that might make a fire.
Sometimes, fires in the forest can be very dangerous, so we need to keep an eye on them all the time. The lookout person will use a special tool called a fire finder to tell where the smoke is coming from. Then, they will use a radio to call for help to stop the fire before it gets too big.
Fire lookouts are usually located on top of a mountain or a high tower, so they can see really far. They have to climb up a ladder or stairs to get to the top of the tower. It's a very important job to be a lookout person because you're helping to protect the forest and the animals that live there.