From publisher blurb:
Melderyn, Hârn's oldest kingdom, is named for the island off the southeast coast of Hârn on which it was founded. The many strange goings-on and mystical persons attributed to the island, which is commonly called "The Wizards' Isle," have given the realm a reputation as a place of mystery and enchantment.
Melderyn is an exciting kingdom for your Hârn campaign. The kingdom is the gateway for trade and travel between Hârn and the realms of the Lythian continent. Three barbarian tribal nations inhabit lands claimed by Melderyn: the reclusive Bujoc, horse-breeding Hodiri, and primitive Solori (currently the target of a genocidal campaign by the Order of the Lady of Paladins). Nomadic gargun (Hârnic orcs) prowl the northern reaches of the realm. The many political, religious, and esoteric factions active in Melderyn provide a variety of opportunities for adventure for your characters.
The Melderyn Kingdom Module is the perfect companion to many other Columbia Games publications, including a number of keeps, castles, and adventure sites.