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Bryce National Park in Utah is a wonderful place to take pictures because of the strange shapes of the hoodoos left mostly by the action of ice. Bryce is high enough that it freezes and then thaws 100 times a year. The last time I was there I was sleeping in a tent in October and the temperature got down into the 20s Fahrenheit. But when the day heated up I was hiking with a day in the 70s or 80s. This action of freezing and thawing cracks the limestone that forms Bryce’s features. Spires like the one shown (Thor’s Hammer) have a deposit of dolomite at the top which is a harder form of limestone. So when the rains come down the dolomite protected the limestone which had been cracked by the ice and this spire did not wash away.

See more Utah travel photography.