4 Facing the double-barreled threat of wildfire danger and the coronavirus pandemic, public land managers overseeing some of California’s most popular parks are moving to ban campfires outside of designated fire rings — in some cases, through the end of the summer. The National Park Service, U.S. Forest Service, Bureau of Land Management and California State Parks, which oversee more than 100 wilderness areas in the state, are working separately but on parallel courses to cut back on campfires that may pose a threat to the state’s dry natural landscape. The agencies have issued new restrictions at various parks and outdoor areas over the past month, some of which will extend to the end of summer and possibly into fall. “Everybody needs to be really cautious. It’s a really trying year,” said Amy Head, a Cal Fire battalion chief. A similar campfire ban was ordered two years ago by public land managers in the state. The most wide-reaching restriction to take effect is on national forest lands across the Sierra Nevada, Cascade and Shasta-Siskiyou ranges, where all campfires are banned in wilderness and outside of designated fire rings at developed campgrounds. The ban will extend through the summer and may…