Semester Offered: Fall 0.5 unit(s) Experience 1.5 billion years of Hudson Valley geologic history from some of the classic vantage points in the region. Field trips to high points such as Breakneck Ridge, Brace Mountain, Bonticou Crag, and Overlook Mountain are supplemented by lectures and readings on the geologic history and the history of geologic studies in the valley. Jeff Walker.