 While Colton Point and Leonard Harrison State Parks and parts of the surrounding Tioga State Forest are now the Pine Creek Gorge National Natural Landmark , it is their status as part of a Pennsylvania State Natural Area that provides the strongest protection for them . Within this Natural Area , logging , mining , and drilling for oil and gas are prohibited . Furthermore , only foot trail access is allowed . In 1988 the Pennsylvania Department of Environmental Resources , precursor to the DCNR , described it as 
