Aestrix

She knows she is getting close when the pointlessly clean hallway widens, and opens up to a rather large room, with a small (impeccably clean) walkway with neat OSHA-compliant guard rails over a vat of what looks to be magic glowing blue water. There are plants along the walls that look surprisingly like devices used for filtration. Or something. They pour out the glowing magic water. The glowing magic water has a current going in a general forward direction.

Also there's a giant root, up ahead. It is very big. Bigger than Jinx and her new spray paint enthusiast buddy if they were standing on one another's shoulders.

(This is one of the smaller ones.)