 There will be some temporary closures at Catoctin Mountain Park on Thursday due to increased security measures. The National Park Service says Park Central Road will be closed between Thurmont Vista and the Camp Green top entrance. Trails to Hog Rock Overlook and Blue Ridge Summit Vista will be closed. All other roads will remain open. The Park Service says these closures are expected to take place on Thursday between 8 a.m. and continuing to approximately 8 p.m.