Overview Indian Flat Group Campground is set on the banks of the Bumping River in the eastern foothills of the Cascades mountain range. Situated beneath a towering mixed conifer forest, this site offers a wonderful setting for large groups looking for a secluded camping experience. Recreation Indian Flat Group Campground is within 10 miles of opportunities to hike, mountain bike, ride horses, ski, raft and enjoy a multitude of outdoor recreational activities throughout the year. Nearby Bum