This is a picture of The Organ in Arches National Park. The Organ is the twin-towered butte that looms above the parking lot at the Courthouse Towers Viewpoint. Standing roughly 500 ft tall this formation is impressive from any vantage, perhaps most so when it first comes into view on the park road.  When approaching Courthouse Towers, this freestanding fin appears as an immense mountain of sandstone. And here especially, looks can be deceptive. A side view unveils a thin, fragile and gravity defying fin of sandstone. A narrow sliver of salmon-colored Entrada sandstone is all that's left standing after the surrounding salt bed and softer rock material have been eroded away. Arches National Park rests over the Moab fault, contributing to the instability of the area. Positioned over a very unstable salt bed, movements in the earth initiated long, vertical cracks in the sandstone. Wind and water erosion, plus immense pressures (video) have turned these ancient rock formations into the enormous fins and arches seen today.