From publisher blurb:
As the Company of the Ivory Scimitar prepares to enter the third level of the mighty Kasbah Dungeon, they find themselves facing not only the cramped confines of a mystical dungeon, but also strange 'environments' that seem to transport them to different regions of both topography and elements. This newest twist in the machinations of the Shard of the Infernal Machine will test not only the character's abilities concerning the standard dungeon crawl, but also how they can navigate remote coral reefs battered by stormys seas, underground caverns so great that they support internal mushroom forests and fortresses of races that have never before been seen in the light of day CRK3, The Depths of Roslof Keep, is a high level adventure for 1E & 5E formats and designed for 5 to 7 characters levels 12-14.