Abyss of the Crimson Caves

From publisher blurb: A minor cult following an obscure myth is seeking artifacts and using ensorcelled children to do their digging. The Crimson Caves hide more than simply this, as the cult is building an army for the day when their deity is released. It’s up to a band of adventurers to free the children and foil the cult in this dungeon crawl for Fifth Edition. Abyss of the Crimson Caves is an adventure for 3-5 player characters of levels 5-7, though it best played with 4 PCs of level 6.