Trails closed until 3 p.m. for forest monitoring drone flight.

Boulder County, Colo. - Two trails at Heil Valley Ranch, the Lichen Loop and the north end of Grindstone Quarry trail, will be closed on Tuesday, Nov. 5, for forestry treatment assessment via drone flight. The trails will open at 3 p.m.

For more information about drones on Boulder County open space, please visit Unmanned Aircraft Systems (UAS) & Drone Policy webpage or contact Stefan Reinold, 303-678-6202 or sreinold@bouldercounty.org for information about this forestry project.