If you search this crypt you get a Priest's Bracelet but a Slith Avatar and five Asps appear.
c Cave
If you search this cave you find a Blessed Short Sword. If you take it you are confronted by the owners: three eye beasts and lots of ogres. The loot they drop is actually better than the blessed sword!
The Dark Slith Priests who worship demons including Grah-Hoth have a piece of the Demonslayer.
r Isolated Hut
This hut is visible from the river but you cannot land there. It must be approached from the swampy northern bank of the arm to the east. You find a Recall crystal – useful but be careful not to cut yourself off from your boat if you use one.
If you kill the chief of this fort you can not only pick up some useful loot (including 750 coins and an Icy Chain Mail) but also get a reward from Sss-Schai in Gnass.
s Slith Traders
Some Sliths who will sell some potion ingredients including Greymould as well a few others things like Slith spears (slightly expensive).
There are lots of basilisks in the Stagnant Tunnels, but you can find the Orb of Thralni here.
v Slith village
There are a few slith villages scattered around these wateres. When you approach them you will be asked whether you want to attack. If you do, the whole village turns out to fight you. They drop lots of slith spears and some coins.
Potion Ingredients
There are no patches of potion ingedients in this area.