I'm new to the guild and I am more "fan" than cartographer (though I have taken my hand to a regional map or two for 1e AD&D campaigns back in the late 70s/early 80s), but these room details are amazing. I never went into too much detail in drawings when I'd map out a structure (I just wrote out the 'dungeon dressing'). The scroll with the picture of the Mind Flayer and the maps of Merek the Cartographer are fantastic. Wow!