The Aerie of Broken Wings

From publisher blurb: A 5TH-LEVEL FIFTH EDITION ADVENTURE The Aerie of Broken Wings is a Fifth Edition adventure for three to five characters of 5th to 6th level and optimized for four characters with an average party level (APL) of 5. A mining shaft has collapsed into a hidden cavern and an ancient temple to a forgotten avatar of death. After being attacked by undead creatures, the miners hired a band of mercenaries to clear them out—who proceeded to seize a hidden artifact’s power for themselves. Their work threatens to revive an avatar of death imprisoned within the cavern's walls.