BERRIEN COUNTY, Mich. (AP) — Part of an ancient Michigan cave where “The Great Train Robbery” was filmed has collapsed under heavy rain. A wall of Bear Cave in Buchanan collapsed this week, Adam Morris, the property manager at a campground that operates near the cave, told MLive.com. The wall collapsed at night and was already closed to the public due to flooding, Morris said. He didn't clarify what night the collapse happened. The cave will remain closed pending an inspection, Morris said. It was unclear how soon the inspection might take place. Storms on July 9, 10 and 15...