Okay kiddo, so the Indiana Dunes National Lakeshore is a really big outdoor playground that has a lot of different things for people to do and see. It's located by a big lake called Lake Michigan, and it's called a "Lakeshore" because it's basically a big stretch of land that goes right up to the water's edge.
When you go to the Indiana Dunes, you can do all sorts of fun things like build sandcastles on the beach, go swimming in the lake, hike through the forest and see all sorts of plants and animals, and even take a bike ride on some trails. There are also some cool buildings called "Historic Homes" that you can visit to learn about people who used to live in the area a long time ago.
The Indiana Dunes is really special because it's home to a lot of different types of habitats, which are like homes for different plants and animals. There are sandy beaches, tall sand dunes, shady forests, and even wetlands where you can see animals like frogs and turtles.
People work really hard to make sure that the Indiana Dunes National Lakeshore is always clean and safe for everyone who visits, so we can all have a good time and enjoy the beautiful scenery.