I've been drawing quite a lot lately for a game I'm going to be running this holiday season. I don't think any of my players visit CG, so I will risk posting a couple of the maps. As is common for me: these maps are drawn by hand.
The method I usually use is to start with a light blue pencil for roughing out the design, followed by a soft HB pencil (.5mm mechanical pencil) and finished up with ink. For my more "important" drawings I usually use a set of Koh-I-Noor Rapidograph technical pens on vellum or Bristol board, but since these drawings are done quickly and not intended for any kind use beyond this one game I'm just using felt-tip technical pens on normal copy paper.
I drew the cemetery undisturbed and just added notes to a printed version to represent the damage caused by the undead, and am doing the same for the tunnels. Someday I'll teach myself how to label my maps digitally...