Right by the watering hole is Skaydi and an aneen. The watering hole can be interacted with. If you have Perception, you can notice something in the depths and use Might to retrieve a Wading Worm. You can also drink the liquid to gain the Bloom Juiced fettle or collect some for later to gain a Flask of Bloom 'Water'. Note that imbibing juice while already juiced will kill you.
And in the lower-right corner, you can interact with the catena to salvage a Hyper-coolant Spray cypher.
The memory triggered when you reach the sulcus at the pylon for the second time is a possible reference to the cranium rats in Planescape: Torment, a species of psychic rodents whose powers increase with their numbers.
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