The Lighthouse of Anan Marath (5E)

From publisher blurb:

From the shoreline of the village of Saemish, waves can be seen tossing their salt and spray upon four small islands, the largest of which is Anan Marath. A great bridge, aged and deteriorated, spans from the mainland connecting these islands and ending at colossal lighthouse of Anan Marath.

Each might y structure is created from the deep-green bedrock found only in the bedrocks of the watery abyss.

For Decades, the Lighthouse of Anan Marath has remained dark. Slowly devolving into a state of shappy disrepair. But no longer! The village council has decided-narrowly and after angry debate-to restore the lighthouse and clear it of its dark and bloody past.