• Climbers on Morning Glory Spire

    City Of Rocks

    National Reserve Idaho

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Spires along the Geological Interpretive Trail
Spires along the Geological Interpretive Trail
Photo by Kris hawkins

Did You Know?

View of eroded granite spire with storm clouds in the background.

Erosion at City of Rocks of a cross-jointed granite pluton has resulted in the formation of a maze of spires and domes that are noted for their impressive scenery, stark silence, and inspirational qualities.