Tag Archive: desert southwest

Sand Dune Arch – Arches National Park – Utah

Sand Dune Arch - Arches National Park - Utah

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Sand Dune Arch – Arches National Park – Utah

The geologic Entrada sandstone layer that covers much of the park is ideal for creating natural arches over thousands and millions of years, through a combination of wind and water erosion, as well as the seasonal freeze and thaw cycle.

Comb Ridge at Sunset – Bluff – Utah

Comb Ridge at Sunset - Bluff - Utah

Comb Ridge is an interesting geologic structure, known as a monocline, that exists in the southeast corner of Utah. It stretches for more than 30 miles from the Abajo Mountains in the north, to near Monument Valley in the south. It is known for the many Anasazi ruins that are found on its flanks and in the surrounding area.