In the meantime, the monument is still accessible, with a scaled-back, temporary visitor center. You can drive, hike, backpack and raft through the dramatic and starkly eroded canyons. Budding scientists can walk through seven different periods of geologic history, and see a few bones on the Fossil Discovery Hike. The monument straddles the Utah-Colorado state line. The Utah portion of the park is about 15 miles east of Vernal via Hwys 40 and 149.