This state has the largest sand dunes complex in the U.S., just north of a river named for its flatness
This state has the largest sand... [DOC] [TLE] Jeopary Questions page 1069 - "INT"Y FRESH - TriviaBistro.com [PAR] U.S. GEOGRAPHY: Located on the Colorado River, it's the USA's largest man-
made ... sand dunes complex in the U.S., just north of a river named for its 
flatness.