These are the grottos at Bryce Point. Unlike the rest of the canyon, there's very little red or orange in these rocks. The colors really change with the light as well -- the evening shadows bathe the walls in a lovely bluish hue, while at noon, all you see is beige rock.

The formation above reminds me of a castle entrance, and shows why Bryce Canyon inspired Walt Disney to create the castles he used in his films.