The yao guai cave appears in the Fallout: New Vegas add-on Honest Hearts.

At least 10 cave fungus can be found in the cave.

However, it will only be a small room blocked off by a wall of rock.

If you destroy the cave during River Monsters, you can still enter it.

If the player chooses to enter the central cavern before killing the yao guai, the dead-end passage is a good place to retreat to if necessary, as it is too narrow for the yao guai to follow.

Heading left leads to a dead end, right leads to the large central cavern. Returning to the last fork the player can take the left this time, it leads to a partially submerged tunnel which exits at another fork. If they are below the Courier then the shots will hit said invisible barrier. Fallout 5: Atlantic Blues, taking place in the Eastern Vegas of Atlantica the DLC would be about the conflict between the Atlantic Congress Revolution and the ruling Atlanticos Family Also I'm aware that this isn't the best, but I just used some Ideas that came to mind and this is what I got. An invisible barrier will block all shots unless the yao guai are against the western wall of the large cavern or near the middle. At the next fork, going straight will lead to a high vantage point over the central cavern, if the player wishes to attack from here, they must hop up onto the rock blocking view of the cavern below. Upon entering the paths will fork, the uphill path to the right will dead end at two skeletons, the left hand path downhill is the only option. The yao guai cave consists of a series of small tunnels leading to a large central cavern containing three yao guai.

Fallout new vegas river monsters