We spent 3 nights backcountry camping on Catamount Island in Cranberry Lake and absolutely loved it! The sunsets from the island were truly incredible. Each site has a picnic table and fire ring. Ours had an extensive pile of dry wood, too. There is a decent privy tucked back in the woods. Bring your own TP though! Also, you will either need to bring your own potable water or filter from the lake, so don’t forget your water filter.
In addition to many cool places to kayak from the island, there are a few hiking trails where you can land your boat and hike for a few hours. The Curtis Pond hike was our favorite and there are some incredible beaver dams along the way. While the mosquitoes weren’t bad at the campsite itself or while kayaking, they are terrible on the trails this time of year; so bring your bug spray, or better yet, bug shirts! The millions upon millions of dragonflies help make up for the mosquitoes!
The Village of Cranberry Lake (which is accessible from the lake) has some supplies, but not much except the very basics at the general store. You’ll need to head to Star Lake or Tupper Lake for anything of significance.
Backcountry camping is first come, first served…no reservations necessary or even possible. No permit is needed. The only fee is if you want to park your vehicle in the state park while you are camping on the island, it is $8 per day.