On April 2, 2012, Dr. Michael Huster, Chair and Professor of Physics, took his PSC218 Survey of Physical Science class on a Rock Walk of Manhattan. They walked from the Manhattan campus building at 361 Broadway down to the 1 train stop at Rector Street. Along the way, Dr. Huster pointed out the types of rocks used in architecture in New York City, including hundreds of fossils in the limestone of the American Stock Exchange Building. The class then took the 1 train to Columbus Circle and walked into Central Park to see the Manhattan schist bedrock, grooves caused by glaciers, and erratic boulders left by the last ice age. The class will go on another field trip to Inwood Hill Park before the semester ends.