Christopher Dobbs is stepping down as executive director of the Museum of the Rockies at Montana State University after nearly 8 years leading the institution.Dobbs will become the executive director of the Adirondack Experience, a history museum in upstate New York. His final day at the Museum of the Rockies will be June 30.During his tenure, annual visitation grew to more than 250,000 people. The museum is now on pace to set record attendance …