The Undercrow

 is an underwater cavern located under the Ragged Crow lighthouse, only accessible via zubmarine.

The Undercrow has 2 possible states, depending on the status of Undercrow: The Almost Dead Man which is related to the  Undercrow: Incomparable Aurelian.

Port description
''A deep, well-lit cavern, thick with a fungal smoke and cave moths. Far above, a lighthouse fire burns. The scent of it is curiously medicinal. It clouds your head and burns your lungs. Farther into the fog, you can make out laboured breathing.''

The Undercrow
This interaction appears with the following conditions:

 Undercrow: The Almost Dead Man ≤ 105

The Darkened Undercrow
''A deep cavern home only to ash and cave moths. The false-stars can be faintly seen through the open roof of the lighthouse that reaches up through the sea. Occasionally, they are obscured by the wings of vast moths.''

This interaction appears with the following conditions:

 Undercrow: The Almost Dead Man = 110