This is a fantastic adventure that perfectly captures a whimsical, yet dangerous, Appendix N feel. The central premise of exploring the petrified guts of a dragon-wizard is a brilliant hook. The writing is a real highlight; its evocative and efficient prose, such as the yawning cave with its rough tongue of a path, guides the GM perfectly. The mechanics are cleverly tied to the anatomy, from the gusting lungs to the acidic stomach, making the dungeon feel like a living environment.
The art has a great charm, and the thematic map is a standout feature. The layout is clear, but the map is so effective it could easily serve as a centre-spread with the location keys arranged around it. This is a minor thought on an otherwise fun and thematically fitting adventure. Well done!