2 SLOPING CORRIDOR. The corridor slopes down steeply towards Room 143. It lowers twenty feet over the sixty feet of corridor, giving a grade of 0.33, and it is noticeable to all characters. A green slime is on the ceiling at the area marked 'O' in the word 'SLOPE'.
This slime is sensitive to vibrations. Each person moving along the corridor will have a 3 in 4 chance of having the slime detect the vibrations of their footsteps and having it fall upon them. Thieves, assassins, monks, or bards successfully moving quietly can avoid this. Similarly, halfling or elf scouts not in metal armor are soft-footed enough to avoid having the slime dislodge.
If the characters look up, it can be seen and avoided by moving along one of the walls. The froglodytes in the rooms beyond Room 143 are aware of the slime, and use this method to avoid having it land on them.
Green Slime (AC 8; MV 0”; HD 2; hp 8; #AT 1 (drip); D Turn to slime in 1-4 rounds; SA Corrosive properties; XP 626)