Here be the Shoals: exotic underground beaches, salty spray and creatures
that bite, stab, and maul.

From afar you hear the steady sounds of waves and smell the salty spray. 
Upon reaching the Shoals, you are impressed by exotic underground beaches, 
making up a few islands in a vast sea. Out of a sudden, a bloodcurling 
scream fills the air, followed by a gurgle. Anxiously, you look around and 
wonder: who is the predator? And who is the prey?
The Shoals are five levels deep and contain the barnacled rune. A dungeon
features only one of the Swamp or Shoals branches. If the Shoals are 
present, the entry is located between Lair: and Lair:

The Slime Pits are six levels deep and contain the slimy rune. The entry is
between Lair:8 and Lair:10.

The Snake Pit is five levels deep and contains the serpentine rune. The
entry is between Lair:3 and Lair:8.

The Hive is four levels deep. The entry is located between dungeon levels 
11 and 16.

The Vaults are eight levels deep and contain the silver rune. The entrance
can be found between levels 14 and 19 of the main dungeon.

The Hall of Blades is a single level amd can be found between Vaults:4 and
Vaults:6.

The Crypt is five levels deep and can be found between Vaults:2 and Vaults:4.

The Tomb is three levels deep and contains the golden rune. Its entry is
either on Crypt:2 or Crypt:3.

Dis is seven levels deep and contains the iron rune. It can be accessed via
the Vestibule of Hell.

Gehenna is seven levels deep and contains the obsidian rune. It can be 
accessed via the Vestibule of Hell.

Cocytus is seven levels deep and contains the icy rune. It can be accessed 
via the Vestibule of Hell.

Tartarus is seven levels deep and contains the bone rune. It can be accessed 
via the Vestibule of Hell.

Zot is five levels deep.