A Living Greyhawk Mini-Module Adventure
From the introduction:
The fields of Longbridge burn, its people the victims of raiders from the Lordship of the Isles. Can Onnwalon patriots drive them back into the sea from whence they came?
A Unique Onnwal regional mini-module for [character levels] 2 - 8 specially for Summer Weekend In Onnwal.
The Blood Beneath the Sun adventure consisted of ten separate "mini-modules" run during three convention rounds. Players could select one of the adventures in each round of play. Some of the adventures were offered only during specific rounds - others were offered in multiple rounds.