The Dungeons & Attics of Hogwarts

Hogwarts is no ordinary castle. Severus Snape began wandering and exploring the castle as a student to get away from the Marauders. A diligent, and curious Slytherin, he discovered the beginning of secrets few but some of the Headmasters and Headmistresses knew. He continued to explore whilst a teacher - and this is what he found...