The magnetic map that I generated for Orange and Ulster counties is displayed below. It shows the distribution of over 15 magnetic anomalies distributed along the axis of the valley. These anomalies are buried and most are not visible at the surface. They represent iron-rich granite and metavolcanic rocks that were part of an ancient island system or archipelago. Mt. Adam and Mt. Eve are a major exception to the south between Pine Island and Warwick, NY. This is a panoramic shot of the area along the Wallkill River where the anomalies occur.