|The Underground Passage|
|Monsters||Misshapen, Skeleton Archer, Fallen, Fallen Shaman, Carver, Vile Hunter|
|Adjacent Zones||Stony Field, Dark Wood|
|Area Level Normal||4|
|Area Level Nightmare||37, 38|
|Area Level Hell||69, 83|
The first floor of the Underground Passage will lead to two locations: the stairs to the Dark Wood, and the second level of the passage.
The second floor is optional, and contains a golden treasure chest for the player to claim.Several monsters inhabit both floors of the Underground Passage, including Skeletons, Corrupted Rogues, and Tainted. Large groups of Carvers and Fallen are also present, the latter including their Shamans as well. No specific Super Unique is present in the Underground Passage, though the second floor may contain one or two randomized Uniques, as well as Champions.