2522
Field of cactus, 2-8 x 100 ft wide/deep. Passing through requires Save vs. Paralysis to avoid 1-4 damage. Cactus are: 1-5 Benign and full of water; 6- Exceptionally refreshing (Heal 1D4 HP when fresh); 7- Hallucinogenic 2-200 Turns of raving madness; 8- Deadly Poison (Save vs. Poison).
Most hex descriptions in Carcosa are kind of crazy.