Almost 500 river miles below its source at Lake Itasca, the Mississippi River tumbles over its only waterfall in downtown Minneapolis.Dubbed the Falls of replica grease gun Saint Anthony by explorer Father Louis Hennepin, the falls were formed by glacial action more than 10,000 years ago.The magnificent waterfall was once over 200 feet high and located in downtown St.Paul.Over the years, the falls migrated upstream to their present location in annie brocoli dvd downtown Minneapolis.