Timpanogos Regional Hospital September 01, 2016

Keenan Adcock, 51, hikes the Timpanogos Cave National Monument trail for the 100th time this season on Wednesday, Aug. 31, 2016, in American Fork. Adcock underwent open-heart surgery to replace an aortic valve. The 1 ½ mile trail ascends 1,000 feet to the cave entrance.

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