This is a triple opening in Kenai Fiords National Park, Alaska (the third opening is out of view to the right). The arch is appropriately located in Three Hole Bay, which in turn is within Aialak Bay, located southeast of Holgate Glacier. This photo by Bob Wenrick was taken at high tide, so the larger opening may be quite a bit larger than the estimated height of 35 feet. Low tide is about 20 feet lower.
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