The Gulf of Hule

A map of Southern Hule appears in The Voyage of the Princess Ark article by Bruce Heard in Dragon #172 (August, 1991).

Southern Hule, from Dragon #172 (August, 1991).  Cartography by Dennis Kauth.

The towns north of Slagovich on the map of Hule from module X5 "Temple of Death" are named:  Ayskudag in Southern Hule, and Raska in the City State of Zvornik.

Heard includes additional information regarding a Gazetteer-era Hule in Dragon #173 (September, 1991).

Gulf of Hule, from Dragon #171 (July, 1991).

The southeastern part of the Gulf of Hule was detailed in Dragon #171 (July, 1991).

The Slave Lords:

As described in my post on Gen Con XIII: Against the Slavers I've previously considered Setting modules A1-4/Slave Lords in the Gulf of Hule.

Hule would serve well as a market for slaves from the Known World, given that slavery is likely a foundation of Hulean society.