Most Incredible Natural Arches On Earth

10. Grosvenor Arch, Utah, USA Found in southern Utah, Grosvenor Arch is a unique sandstone double arch that while not the biggest in this list is still hugely striking in appearance. Teetering atop stony stilts, this splendid natural formation is accessible by road, though unlike some such landforms offers no natural passageway below that visitors can walk through. As a natural arch, Grosvenor