Many years ago two wealthy adventurers, Rogahn the Fearless and Zelligar the Unknown, built a hidden complex known as the Caverns of Quasqueton. From this base, they conducted their affairs away from the prying eyes of civilization. While of questionable ethical standing, the two drove back a barbarian invasion and gained the support of locals. Eventually, they gathered their own army and went on an expedition against said enemies, where they met their demise.

The finished upper level served as a home for Rogahn and Zelligar and contains much of their personal possessions. A number of traps await an unwary group. Some of these rooms include an area filled with pools (some hazardous and others not) and a wizard's laboratory. The lower level may have meant to feature a museum, an arena, and grand cavern, but it was never finished.

A town in Iowa has this name. Frank Lloyd Wright house.