The Grand Staircase – a series of steplike uplifted rock layers stretching north from the Grand Canyon – dramatically culminates in the Pink Cliffs formation at Bryce Canyon National Park. These cliffs were deposited as sediment in a huge prehistoric lake some 50 to 60 million years ago, slowly lifted above sea level, then eroded into wondrous ranks of pinnacles and points, steeples and spires, cliffs and crevices, and oddly-shaped hoodoos.