The rebreather is located in a cave within the forest. This cave is the specific place where the rebreather can be found. The rebreather is a device that allows for breathing underwater, and it is essential for exploring submerged areas. The forest is likely to be a dense and natural environment, filled with trees and wildlife.
The cave may be hidden or hard to find, as it is not directly mentioned in the text. However, it is implied that the rebreather can be obtained by locating and entering this cave within the forest.