The dig site was originally excavated by Sir Gula, in search of a valuable troll artifact. It was later used by the healer Heleon, who found that the humidity level within is perfect for brewing his potent Heleon Potions. He has recently fled the site, because it has become infested with undead creatures. He still has the key ("Heleon's Cellar Key") needed to unlock the trapdoor. It can be obtained by speaking with him on Lanilor Lane and agreeing to perform the quest Herbal Medicine.