Shimmering Coast

From the introduction:

Golden, sandy beaches, waving palm trees, and pale blue waters give the Shimmering Coast its name, but it also has a darker moniker: the Bone Beaches. A cannibalistic cult occupies the region. The group lives in Dark Leaf Village, a crude collection of huts sited on a rocky hill overlooking the ocean. Cultists prey on those who travel the coastal road to the northwest, although they avoid White Sand Oasis because of its powerful protector. The cannibals use swift outriggers to raid passing ships, and the wreckage (and occasional survivors) of these raids often wash up on Chokewind Isle, a desolate, waterless stretch of sand. Warning: contains descriptions of cannibalism and human sacrifice.