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Erin Alberty | Tribune file photo Desert Voices, a family-friendly trail at Dinosaur National Monument, pictured in May. The trai Erin Alberty | Tribune file photo Desert Voices, a family-friendly trail at Dinosaur National Monument, pictured in May. The trai Erin Alberty | Tribune file photo Desert Voices, a family-friendly trail at Dinosaur National Monument, pictured in May. The trai Erin Alberty | Tribune file photo Desert Voices, a family-friendly trail at Dinosaur National Monument, pictured in May. The trai Erin Alberty | The Salt Lake Tribune Wildflowers greet hikers near the wash to the Moonshine Tanks on May 1, 2016, in the San R Erin Alberty | Tribune file photo Desert Voices, a family-friendly trail at Dinosaur National Monument, pictured in May. The trai Erin Alberty | The Salt Lake Tribune A penstemon puts on a show for approaching hikers May 1, 2016, near Moonshine Tanks in the Erin Alberty | The Salt Lake Tribune Father and daughter march up a slickrock slope May 1, 2016, near Moonshine Tanks in the Sa