The Forbidden Lake is an area found inside the Darklands. It is west of Forsaken Valley. The entire area is a lake of Fusion Matter, the only platforms being several heavily damaged docks, sunken ships, and a large island which serves as the main section of the area. The island is surrounded by a damaged fence. There are also a damaged cabin and a crashed S.C.A.M.P.E.R. The only major NPC here is GIR, but there is also the stranded S.C.A.M.P.E.R. pilot, Numbuh 6934.
The S.C.A.M.P.E.R.'s crash was the result of a malfunction caused by GIR. Apparently, when GIR was taking a ride in the S.C.A.M.P.E.R., he pressed a red button which released the engine from the ship, causing it to crash onto the island, and standing GIR and the S.C.A.M.P.E.R. pilot there.
North of the main area is the Fusion Swamp infected zone. The infected zone is made up of several small islands and sunken ships.
Fusion GIR's lair
Fusion Wilt's Epic lair