If Moonlight Marsh was a self-contained rainforest ecosystem, filled with seasons and natural elements—where students might have class on a grassy field in the morning and float into a lecture on the river in the afternoon—then Grayvale was a colossal canyon shrouded in mist.
This region was covered in fog almost 80% of the year. Riverboats drifted between canyon walls, and students lived aboard them. Though technically called a river, each bank was over a kilometer apart.
According to GodDraw77, the rivers of Grayvale liked to play tricks. When students left to attend classes in the mountains, the river would often shift their houseboats—sending them upstream or downstream. Every day after class, students wandered the fog just trying to locate their own homes again.
Rita thought it reminded her of the giant trees in Moonlight Marsh. They, too, seemed to enjoy messing with students—especially by casting all the light on the marsh so the young ones would fumble around miserably.
