A one-Round Living Greyhawk Core Special Adventure
From the introduction:
Long a place of legend, tales of White Plume Mountain are well known. Once the lair of the infamous wizard, Keraptis, the threat from this mountain was thought laid low decades ago. Now, though, tremors shake the ground and thick black smoke rising from the mountain’s summit casts a sinister shadow over the surrounding lands. What new evil has arisen under the mountain?
A one-round Core Special adventure set in White Plume Mountain for characters level 1 - 15.