Let a river run through your game! Pathfinder Map Pack: River System contains 18 full-color 5 x 8-inch map tiles, stunningly crafted by cartographer Jason A. Engle, that combine to form rivers to navigate or circumvent! These rivers perfectly match the grassy terrain found in Pathfinder Flip-Mat: Basic Terrain Multi-Pack and other grassy Flip-Mat products. Suitable for experienced GMs and novices alike, this product fits perfectly into any Game Master's arsenal. Wet, dry, and permanent markers erase from the tiles! With revised packaging that includes a reusable box for easy storage, Map Packs have never been so useful!