Postcard from Simon Forster

I'm a big fan of the maps that +Simon Forster posts regularly on Google+. This morning I got a very pleasant surprise in the form of a postcard from Simon with a very cool hand-drawn map. It would make a very nice little side trek in an adventure. The party make camp for the night in a ruined village, only to be awoken in the night by strange noise coming from the cliffs above...