From publisher blurb:
An adventure in Hyperborea designed for from four to six characters of 2nd through 4th level
Somewhere in the depths of Diamond Desert lie the skeletal remains of Ymir’s Serpent, a legendary Viking longship. In days of yore, Sigtrygg Forkbeard led his company upriver, piercing the desert’s hostile heart. There the Vikings unearthed a lost mine brimming with green diamonds, but the River Æolus desiccated as the Serpent prepared for launch, and the ship was swallowed by the dunes. Forkbeard and his company were never seen again, but tales of a shimmering Viking ghost ship gliding over the dunes persist to this day.
Ghost Ship of the Desert Dunes takes players into an action-packed realm of adventure: the mythical world of Hyperborea, a sword-and-sorcery campaign setting inspired by the fantastic fiction of Robert E. Howard, H.P. Lovecraft, Clark Ashton Smith, and others. This adventure is designed for Astonishing Swordsmen & Sorcerers of Hyperborea (AS&SH), a role-playing game descended from the original 1974 fantasy wargame and miniatures campaign rules as conceived by E. Gary Gygax and Dave Arneson.