I was running around the Timeless Isle, as you do, and noticed that some of the ledges under the water looked like cave entrances. The vast majority of them weren't, but this one, beneath the Gulp Frogs, was. What the hell is it? To my admittedly limited knowledge, no rare or chest spawns in there. The heart is made up of glinting sand, and there are 4 chairs within in surrounding a grim campfire. I looted all the sand to see if anything happened - nothing did. Sat on each chair, nothing happened. I eventually left, and when I came back later on the sand had all respawned. Anyone know what it's a reference to? There's bound to be something.