The Everstream is an area first introduced in Monster Hunter: World.
This area has only one campsite on a cliffside. The final fight against Zorah Magdaros takes place here. The area is a focal point for the bioenergy of the New World. It is an underground region, with pools of lava and burning rock contrasting with the dark stone roof and the water on its cavernous floor, leading out to the sea.
Also in this area is a barrier that players defend with cannons and ballistae, and a passage created by Zorah Magdaros, which leads to the Elder's Recess. It is similar to the Great Ravine, in the respect that only Zorah Magdaros is fought here.