I am trying to find the name of a movie about twin young men who made their father angry, and were sent away to summer camp. On the way they met two girls who were wilderness counselors. The boys assume their identities and pretend to be wilderness counselors. They end up at Yellowstone Park, and uncover a plot to blow up Old Faithful the geyser. There are prairie dogs in the movie. I think it used to be shown on TBS every year.

Meet the Deedles (http://en.wikipedia.org/wiki/Meet_the_Deedles)

Thanks!! That is it. That was a very quick response.