If your PC’s happen to be on an island, say perhaps named Chult, and find themselves in Kobold infested mountains you might need this map! It’s free. Perfect for a young red dragon to hide inside and hoard some of that cash money.
BE SURE TO DOWNLOAD THE COMPANION OBJECTS TO COMPLETE THIS MAP!
Map Download: https://drive.google.com/open?id=1ecQ…
Objects Download: https://drive.google.com/open?id=1X_x…
The Dungeon Geek 
I stumbled across your blog while Googling maps of D&D mines for ideas. I found this post and liked the map so much that I had it printed at Staples as three 20″x30″ battle maps. They turned out great! I’m really enjoying your blog, and if you wind up on Patreon I’d be happy to support you.
Thanks again!