Lost Mine of Phandelver
In the southwestern Sumber Hills, built centuries ago by the band of adventurers, the Knights of the Silver Horn, this tall stone tower stands on a height commanding a splendid view of the Sumber Hills. It is used as a private retreat for an elite hippogriff flying club composed of rich Waterdhavians calling themselves the Feathergale Society. These “knights” effect a dashing image and are given to drinking, singing, wearing fashionable clothing, and general revelry.
Recently the Feathergale Society was found to be headed by a member of the Cult of Howling Hatred. He was bested in the spire by a band of adventurers who held the tower as their own base of operations for a short time, in conjunction with a group of local Harpers.
Eventually the cultists struck back at the tower as a sign of revenge. The cultists slaughtered everyone save two surviors. Redknife Savra Belabranta, one of the survivors, has sworn to retake the spire and reform the Feathergale Society as a force of good in the Dessarin Valley.