This isolated Pennsylvania hike has earned attention for snake sightings, which gives the whole outing a different kind of thrill. Kings Gap contains local habitat used by snake species, but park information describes summer sightings across the property rather than identifying Rock Scree Trail as a viewing location. The Rock Scree Trail crosses a rocky outcrop where Antietam quartzite was quarried for the mansion’s construction. Timber Rattlesnakes: The Stars Of The Summer TrailFew encounters on a Pennsylvania trail get your attention like spotting a timber rattlesnake nearby. Sturdy shoes support balance on the Rock Scree Trail’s uneven terrain, but no footwear eliminates snakebite risk.