- Dates: July 29, 2017
- Location: Pine Grove Furnace State Park
- Region: Gardners
- Address: 1100 Pine Grove Road, Gardners, PA 17324
- Phone: (717) 486-7174
- Time: 8:00 PM
Discover nature's engineers and learn about their incredible building skills. Take a walk along the lake to see beaver habitat and hopefully sneak a glance at one. Don't forget your flashlight! Meet at the Laurel Lake Boat Launch.