Deadmen Bog is a heavily treed wet area just outside of Coyote Point. It’s main features are the boggy area (of course), Comet Lake with has big and small islands (the big one has a busted cabin, and an old mine site.)
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Billy and his best friends Raffi and Lisa go into the bog looking for another friend Archie. They use a map (this map) drawn by their friend Major Tom. To get started, they take a path beginning near the Will-o’-the Wisp Mansion.
Do they find Archie? Well, you’ll just have to read the book. But I can tell you, Billy, Raffi, and Lisa end up in the middle of a forest fire caused by a thunder storm, and they find themselves in real danger.