'Baking a difference:' Three Forks woman serving up cookies, Positively Montana-style Karen's Cookies is an honor-system cookie stop in Madison Buffalo Jump State Park and last updated 2021-06-24 22:37:18-04 THREE FORKS â If youâve ever visited Madison Buffalo Jump State Park out near Three Forks, youâve probably seen it: a little red wagon on the side of the road, filled with coolersâand in those coolers, cookies. In the summer, in places like Madison Buffalo Jump State Park, the terrain could be a little rugged, if it isnât already hot. On days like those, what sounds really nice are some cookies and some water, right?