Heroscape - The Swamps of Valhalla Terrain ExpansionBuild and Customize! Many see the receding mire of swamplands as a sign of victory, for it heralds the decline of the Marro scourge that once plagued the land. But to the Kyrie of the Moon Tribe, it is an ill portent. The shallow waters of these remaining swamps teem with life. If they are allowed to disappear, what, or who, will be next? This expansion contains over 120 hexes and is fully compatible with all Heroscape Master Sets and Expansions.