Dark Clouds Gather is an adventure module published in 1985 for the Advanced Dungeons & Dragons fantasy role-playing game.
Dark Clouds Gather involves aerial combat between good and evil-aligned flying creatures, which culminates in a raid on a cloud giant's castle.
UK7 Dark Clouds Gather was written by Jim Bambra and Phil Gallagher, with art by Brian Williams, and was published by TSR in 1985 as a 32-page booklet with an outer folder.
Lawrence Schick, in his 1991 book Heroic Worlds, recommends this scenario for experienced DM's and "players with a good grasp of the rules".
Review: The V.I.P. of Gaming Magazine #2 (1986)