North Knob
 North Knob is the highest peak in eastern Pennsylvania east of the Susquehanna River. North Knob also known as Elk Mountain rises conspicuously above the surrounding landscape. The mountain actually has two peaks the main summit of North Knob and the lower summit known as South Knob 2602 feet (793 m). North Knob is home to Elk Mountain Ski Area and has a 1000 feet (305 m) vertical drop and 27 ski trails.