Newberry National Volcanic Monument facilities set to open for summer, with capacity limits Discover Your Forest BEND, Ore. (KTVZ) -- Newberry National Volcanic Monument south of Bend will open many of its sites for summer visitors next week, with limited capacity due to COVID-19, the Deschutes National Forest said Friday. Beginning on Thursday, Lava River Cave will open for daily operations through Sunday, August 22. The site will close on August 23 for the rest of the season for construction activities to improve access to the cave. For COVID-19 mitigations, the entrance gate to the cave will open at 9 a.m. but will close intermittently for brief periods of time during the day to help manage crowd size in the cave and parking lot. Closures of the gate will not be scheduled and typically will be limited to 30 minutes. The entrance gate will close daily at 3:45 p.m.