I love the ponds off of Schooner Landing/ Barth Rd. in Cumberland County, if you're willing to make the drive. It's the last exit off Route 55 South, just before it goes to two lanes. Used to be a great spot to go for a swim but the partiers ruined it and now it's frequently patrolled. Still a nice walk. https://maps.njpinebarrens.com/#lat=39.34927675452409&lng=-74.97840046756929&z=17&type=terrain&gpx=