County Bears close national monument … by Special to the Herald Times on July 8, 2013 Special to the Herald Times Author More in County: Commissioners review basin work, housing and infrastructure at work session May 20, 2026 RIO HAPPENINGS: May 10-16, 2026 May 20, 2026 COMMUNITY CALENDAR – May 21st, 2026 May 20, 2026 Several recent sightings of black bears near where visitors travel have caused the closure of two campgrounds at Dinosaur National Monument until further notice. The bears present a danger to visitors, and safety precautions are being taken.