River's Light - SignedMonte Dolack 28" X 22" 2015 This fine art poster was reproduced from an original acrylic painting of Black Eagle Dam in Great Falls, Montana. Northwestern Energy commissioned this poster commemorating its purchase late last year of 11 Montana hydroelectric facilities, including five hydroelectric dams near Great Falls. "The dams and river are part of my background and history," Dolack said. "I feel a sense of connectedness to that dam and landscape."