Chronicles of Reilukerho Ptolus campaign: Rosegate house
Warning, Spoilers to Ptolus players!
Heroes have been going adventuring while the workers they've hired are starting to build basement to the house. To everyone's surprise, the building seems to actually have a basement - the workers hit solid built stone and couldn't advance more. After a bit of searching, the heroes found a secret door that leads to the basement.
Into the cellar