WHAT: Where the Yellowstone Goes WHERE: Wilma Theatre, 131 S. Higgins Ave. WHEN: Sat., June 9, at 7:30 PM HOW MUCH: $13/$10 adv. Tickets available at Grizzly Hackle, 215 W. Front St., or at missoula-wtyg.eventbrite.com WHY: Filmmaker Hunter Weeks and Montana river guide Robert Hawkins have documented their 30-day journey down the Yellowstone River with several others in the film Where the Yellowstone Goes and in doing so remind us how vital all the state?s stream are. The 692-mile long river is special in that it is the longest undammed river in the lower 48 states (the Amazon wins the worldwide battle at 4,310 miles). As the two boats float and meander downstream, the members of the party fish and soak in all the grandeur of the country that envelops them.