Hudson River Sloop Clearwater Revival festival at Croton Point State Park at Croton On Hudson on June 19, 2010. Photo by Augusto F. Menezes/gusphoto@yahoo.com via ClearwaterFestival.org. Remastered Virtual Revival Music Festival to be restreamed Oct. 4 The Great Hudson River Revival (aka Clearwater Festival), the world’s oldest and largest music and environmental festival,... Entertainment 28 Sep 2020 | 12:09