From publisher blurb: The Lost Tower of Viondor is a 5e adventure for characters of 7th to 9th level, using the Primeval Thule Campaign Setting. A ghostly ship on the Sea of Mists, a frozen wreck in the Thousand Teeth, and the long-lost legacy of an arrogant archmage who stared the doom of Nimoth in the face and did not blink; these are the stepping stones to finding the forgotten Tower of Viondor. An Atlantean wizard of unparalleled inventiveness, the legendary Viondor would not flee with his kin when the glaciers approached. Hidden in the far glacial rifts of Nimoth his tower remains, with the wisdom of the ancients perhaps unguarded after his inevitable demise. Inspired by the literary traditions of sword-and-sorcery adventure, lost worlds, and fantastic horror, the land of Primeval Thule is a savage, intense campaign setting.