| Category | Oceanic |
| Region | Pipe Home |
| Location | Salzârrâk |
Along the eastern coasts of Pipe Home is a long reef called the Teeth of Aerdresh. The base of this reef is the bones of Aerdresh.
The few safe channels from Salzârrâk to the inner lagoons and coasts of Pipe Home are guarded by the navies of Pipe Home's city-states. The depth and length of the reef are such that it is the greatest defense for the island holds of Pipe Home.
The vastness of the reef and the nearby isles gave rise to the largest number of lighthouses per square mile of any coast-line.