146. PASSAGES. The Berkshires, Massachusetts. This wooded, mountainous region is revered by Northeasterners. Even the names around here have a Northeastern sound: the Taconic Mountains, the “marble valleys of the Hoosic River”, the Hudson Highlands, and all of it bordered by “Metacomet Ridge geology”. The Berkshire mountain ranges were formed 500 million years ago when Africa collided with North America. Imagine that.