Where is Deep Sea Trek's Lost River?

The Lost River is a unique cave-based ecosystem very deep under the sea, and entrances to the Lost River can be found in both the Cold Bone Forest and the Great Barrier Reef. The Cyclops can also access the Lost River ecosystem from the Great Barrier Reef or the northern entrance to the Cold Bone Forest. Due to its deep-sea location and lack of ecosystem diversity, Lost River is a perpetually ragged, bleak landscape. In addition to the green fumes from the acidic marshes that color the waters green, the occasional wail of a ghost ray gives the Lost River an eerie atmosphere.