BLANDING, Utah (AP) -- Laminated sheets of paper held in place by rocks rest inside ancient cliff dwellings nestled underneath a spectacular red rock overhang in southeastern Utah. "Don't erase the traces of America's past," the signs read. "Please do not enter interior rooms." The weathered signs and a similar warning at the trailhead are the only protections in place for these easily accessible ruins along a canyon hiking path. -snip- Opponents agree the area is a natural treasure worth preserving but fear a federal designation would create restrictions on oil and gas development as well residents' ability to camp,...