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All trails on UCAR-managed land surrounding Mesa Lab are closed today through Friday, October 28, including the Walter Orr Roberts Weather Trail and the NCAR Trail, to carry out tree thinning and other wildfire mitigation work. In addition, the city of Boulder's Open Space and Mountain Parks department will close all trails that access the NCAR Mesa from the Bear Canyon and Mesa trails.
No trail access will be permitted at any time during the closure due to safety concerns for trail users.