Bryce Canyon National Park is the only place in the world that contains hoodoos. Hoodoos start as tall thin ridges called fins. The fins further erode into large pinnacles of rock that we call hoodoos. After many many years, the hoodoos weaken and fall adding more color to the already beautiful countryside. Some hoodoos fall into some small rivers and their sediments get carried downstream. When the sediment builds up, new hoodoos are made. Hoodoos create a sort of cycle, and recycle themselves. These are truly magnificent.