Delicate Arch - Arches National Park, UT. Among its many geological formations, Arches National Park has the greatest density of natural arches in the world. The fantastic rock scenery is the result of uplift, underground salt movement, wind, water and extreme temperatures. The park has more than 2,000 arches, and Delicate Arch serves as its trademark with an opening 4 stories tall.Delicate Arch - Arches National Park, UT. The fantastic rock scenery at Arches National Park is the result of uplift, underground salt movement, wind, water and extreme temperatures. Delicate Arch, the trademark of the park, is a remnant of a fin (thin wall) of Entrada Sandstone. Gradually erosion has worn away the rest of the fin leaving a freestanding arch with an opening 4 stories tall. Film Size 4X5