This area lives in Hex p48.42
In the beaches between Palisma and the docks, southeast of the town itself, a small stone edifice rises out of a large sand dune, little more than three walls built to surround a stairwell leading down into darkness - an iron gate, locked and rusted, prevents anyone from descending down. (No longer locked... been broken down?)
The small stone structure beneath the surface was built as storage and workshop for the Mictlanite engineers who were tasked with constructing the fleet of ships on which their people would flee the continent in ages past. Alar was the head engineer of the team and died (heartattack, accident?) before their work was completed. His remains are interred beneath a statue in his likeness in Room 8.
A hole in one of the rooms leads down to a underground cavern which is a lair for a to-be-determined beastie.