A One-Round Living Greyhawk Bandit Kingdoms Regional Adventure
From the introduction:
Rumors abound about strange happenings in the Fellreev Forest. Nothing unusual there, right... wrong! You have received a message from Fort Hendricks requesting your assistance. Will you go to their aid or will you leave them to perish?
This scenario occasionally is found with an associated "errata" file noting:
APL 4 final fight lists 3 Ghouls with 26 hit points and the Mummy. The mod lists the correct MM page, so it was written in 3.5, but ghouls only get 13 hit points (2d12), while 3.0 ghasts got 26 hit points (no Toughness feat, I believe).
3 Ghasts would be EL 6 + Mummy CR 5 + 1 Circumstance for Prot Energy (fire) and Unhallow up would be EL 8, imo. Seems it should be 3 Ghouls CR 1 + Mummy 5 + 1 Circumstance for spells up = EL 6-7.