Hike in or boat across the reservoir, thats the only way to access these primitive sites. Beautiful sites right on the lake, or up higher if wanted. If possible I suggest scouting out the perfect site prior to booking because some are gems while others are difficult to get into. We boated/canoed kayaked in for a huge group one year and single sites every other year. Earlier in the year is better to prevent lots and lots of bugs, August is hot and buggy!! Rangers always come by sites to check on campers and are nice.