From publisher blurb: Pets and livestock are disappearing. All signs point to an ancient barrow that has opened in a recent storm. Now a scout who went to explore it has not returned. Help is wanted, and fast! Cavern Crawl #002 - Siren Serpent is a 5th Edition compatible 3rd level adventure for four to six players, containing the following content: New Monster: Snake Charmer New Magic Item: Ring of Solid Ground Detailed Battle Map: GM numbered, Player grid, and Player no-grid versions Unique Art throughout the adventure