For weekends and nights before holidays at national forest recreation areas, apply for the following month's lottery from the 4th at 9 a.m. to the 9th at 6 p.m. Results are announced on the 10th at 4 p.m.; remaining and unpaid rooms open to first-come booking on the 15th at 9 a.m. Public and private forests may have different rules.
Before travelling, check the forest-specific availability, current fees, closures and weather restrictions on Foresttrip.