Kavenwell

From publisher blurb: Built by an unknown hand, the well was lost for centuries when the fortress above it was destroyed in a cataclysm. The well remained buried and hidden, until it was discovered by a race of burrowing rat-folk, who soon saw the benefits of access to a well of evil magic! A printable battlemap compatible with any RPG/Dungeon-Crawl game. Use as a standalone gameboard, or combine with any same-scale tileset. Contents: A 30 x 30 map depicting a network of burrows and tunnels, filled with bizarre flora and fungi, and at the centre is an ancient well, housed in a stone chamber. This well doesn't contain water though - it's a source of powerful, but evil, magic.