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Contact: Dan Johnson, (435) 781-7702
Dinosaur, CO – The Jones Hole Trail and surrounding NPS lands from the NPS/USFWS fish hatchery boundary to Ely Creek remain closed to all public use due to an active rock slide reminded Superintendent Mary Risser.
A geomorphologist, who works for the National Park Service Washington Office Geologic Resources Division, plans to be in the monument towards the end of next week. He will visit the slide area and look at the cliff face, especially those areas around the cracks, to try to determine the potential for more slides in the immediate future. "We want to get the trail open again as soon as possible, but we also need to take these necessary steps to help ensure public safety," stated Superintendent Risser. "We appreciate everyone's continued compliance with closure notice." A determination on the potential for reopening the area will be made after the site assessment.
The first reported rock slide occurred on Tuesday, June 18, 2013. A large slab of rock broke free from a cliff face just a short distance inside the monument boundary, less than ¼ mile from the Jones Hole Fish Hatchery. After receiving reports, park rangers checked the scene and did not see any further activity.
On Thursday morning, June 20, another small slide occurred. Then near noon, Mountain Time, a much larger slab of rock broke free and tumbled to the stream below. A large debris field formed below the slide site. The slide was large enough to send large boulders, the size of a pickup truck, across Jones Hole Creek before coming to rest against trees by the hiking trail. No injuries were reported as a result of the slide.
The area that broke free from the cliff was roughly estimated to be 100 feet high by 50 feet wide with a thickness of 10 feet or more. The slab fell over another 400 feet to the stream below. Numerous trees were knocked down during the event including several across the trail. Large cracks are visible in the rock remaining attached to the cliff. Staff at the fish hatchery have reported seeing a couple of small rocks fall from the cliff face. Due to the potential for more falling rock, the area remains closed until further notice.
If necessary, National Park Service Rangers will issue citations to persons violating the terms of this closure under authority of Title 36 Code of Federal Regulations 1.5(a)(1). The park asks for everyone's cooperation to protect both visitor and staff safety.
The Jones Hole Trail is a popular hiking trail that connects the Jones Hole Fish Hatchery with the Green River. It is approximately 4.25 miles long one way. The area is also very popular with anglers due to the access to Jones Hole Creek.
For more information on Dinosaur National Monument, call us at (435) 781-7700. You can also follow us on twitter at twitter.com/DinosaurNPS, or find us on facebook at www.facebook.com/DinosaurNationalMonument.