Hexcrawl 88 - The Black Dragon of Runedarth

Jhank leads Gemwin, Bors, and Hokan to attack the Cult of the Dragon in Runedarth, but sidetracks to investigate the foul waters once again pouring from the central fountain, and find evidence of claw marks and acid corruption. They discover a new secret door, and a shaft leading up into the Arcrown's Refuge, a hidden level. Without exploring it, they find another secret room and shaft leading up to a treasure chamber full of magical items, which turns out to be attached to the Temple of Mordinsamman they had previously cleared, except for the Spectator guardian. After a rest, they descend again and battle Antharzyreph, a black dragon, and its bone naga ally. The skirmisher team is wiped out, but the PCs all survive and take the dragon's hoard. They use part of it to bribe the Cult of the Dragon to leave (they were only there for the dragon anyway) and Bors is called home to Moradin.