USA/ND: Theodore Roosevelt NP/North Unit – Cannonballs

The North Unit of the Theodore Rosevelt National Park is famous for unique geological formations known as cannonballs. The cannonballs are pieces of stronger sandstone that was sculpted by erosion and glaciers as the ice and water moved around them. Cannonballs were formed millions of years ago when the present day badlands of the park were at the bottom of the sea. The area with cannonballs is truly spectacular – there are about two dozen of them, some of massive size, and you can climb and hike all around them, with very few people around.