Arches National Park, USA
Once there overlooking the sea, leaving behind huge salt pillow. Now this salt layers are sedimentary rocks, under its own pressure turned into rocks. Almost all of the arches formed of pink Sandstone, rarely orange. Sometimes both types of Sandstone are taking part in the creation of the arches, then the cut is clearly seen layers of pink and orange.
Camera: Nikon D7000 Body + Nikon 18-105mm F/3,5-5,6G AF-S DX NIKKOR ED VR
You've got a great sense of composition. Always enjoy seeing your photos.