High on a ridge in Utah's Arches National Park, Delicate Arch is a magnificent sentry overlooking the other geological wonders within the park. The result of wind and rain erosion over millions of years, this elegant, awe-inspiring sandstone sculpture has become the symbol of Arches National Park. Viewed from a nearby ridge, it looks small against the horizon... it's not until you make the steep hike up to the arch itself that you are struck by its sheer size.