from NPS: Geologic features visible from Bryce Point illustrate pieces of the natural history of the area. Visitors stand on the conglomerate at Boat Mesa that caps the Claron Formation along the rim from Bryce Point to Inspiration Point, a remainder from a time when nearby areas were being uplifted by volcanic activity and eroded by streams. These streams flowed through the area we now know as Bryce Canyon and deposited this gray to brown conglomerate. The grottos, also visible from Bryce Point, are the result of erosion of softer pockets of the upper White Member of the Claron Formation.

These Grottos will soon become HooDoos as their arches are worn away by wind, rain and time.

For many more photos and movies: Paria Overlook and Bryce Point  [ youtube video ]