Mount Raimer, 2,572 feet (784 m), is a prominent peak in the Taconic Mountains of western Massachusetts and adjacent New York.

Petersburg Pass, located on New York Route 2/ Massachusetts Route 2, cuts over the gap between Mount Raimer and the next summit to the north, Smith Hill, at an elevation of 1,650 feet (500 m), just .75 miles (1.21 km) north of the summit of Mount Raimer.

Originally known as Petersburg Pass Ski Area, the base lodge and parking lots were located adjacent to the height of land on New York State Route 2.

Due to a variety of reasons, including the steep ascent up Route 2 and the lack of water for snowmaking, the ski area struggled through much of its existence.

An attempt was made to dramatically expand the ski area during its final years, as trails were cut on the western face of the mountain.