2 - All the way down

Mee'haïl walks down the tunnel, along the underground river. The sound of splashes made when the river hits one of the recently fallen rocks covers his advancing. The light of his torch draws frightening figures on the walls, and Mee'haïl fears to meet one of the spider inhabitant of this underground complex as he is in no shape to face one of them right now.
Down the tunnel, Mee'haïl discovers a lake with clear blue —maybe lightly glowing?— water. At its centrer, the water seems to escape through an unseen hole forming a great and probably rather strong vortex. The cave here is rather large, enough so that Mee'haïl can't see it entirely with the light he is carrying. Small rodents flee from this sudden light in their habitat.
A broken bridge made of stone stays right in front of Mee, from which he guesses that there must be at least two other tunnels coming to this lake (one of each side). A large, purple murshroom sits at the top of the eastern part of the bridge, and it looks like fungi of many size, forms and colors are growing in this very favorable environment.

You climb up the wall and end up near one end of the collapsed stone bridge. There are several of those big mushrooms of various colors to be seen close by, and patches of moss here and there that probably is the same bioluminescent moss that you saw in the cave you come from. As you continue to follow the western wall, a tunnel appears and goes north: it is made of raw stone, just like the rest of the cavern, but has some steps carved out of stone to help with to variations of height. Some go up, some go down, but the general feeling is that is that is goes down slowly.

Upon better inspection you identify the large and colorful mushrooms in the room as several kinds of fungi, and the big purple one clearly is a Violet Fungus. Known quite well among cave-dwelling species, the violet fungus is a small to medium sized plant creature. They resemble giant mushrooms, ranging from light pink to deep purple in color. Their most distinctive and dangerous feature is their venomous tentacles that cause the rotting of almost any tissue they come in contact with. They are known to have a symbiotic relationship with shrieker fungi.
And while they are barely sentient plants, they are able to move and can be deadly when they feel threatened.

The fungi are not blocking the way, they are just minding their own business here and there. I'll add them on the map the avoid confusion.

Mee'haïl carefully avoids the colorful fungi, slowly walking into the northern passage. A rather large tunnel continues that way, almost made of raw stone with no decoration or any kind of finishes other than irregular steps.
As the barbarian leave the lake's room behind him and goes up some stone stairs, he overhears a voice. Not really a voice, actually, and more like stifled sobs that echo on the raw walls. The tunnel turns right and continues to go down, and it seems like the noise comes from that way.

Mee'haïl continue to go down the dark passage, looking for the source of that sound. The tunnel turns right but doesn't go very far from there. Just down the stairs, you see a yound girl with dirty clothes curled up in a ball and hiding her face from you as she does her best to remain silent and motionless — but the sobs and hiccups make that task really hard.

Yes of course Mee'haïl, the young girl is human. She looks at you with a mix of terror and desperation in her eyes.