located within Union County’s Watchung Reservation
452 New Providence Road, Mountainside, NJ 07092

Union County Freeholders Vernell Wright, Linda Carter, Bette Jane Kowalski and Alexander Mirabella congratulates Trailside’s Park Naturalist Ruth Yablonsky, one of the 10 recipients of the 2017 Women of Excellence Awards. They were joined by Union County Sheriff Joe Cryan, Union County Clerk Joanne Rajoppi and Assemblywoman Annette Quijano. 

The full-day option was a great way to immerse the kids and capture their interest.  The teachers were enthusiastic, professional and knowledgeable.  Thank you for sharing your skills.
Cranford, NJ
The combination of your teachers’ enthusiasm, natural expertise and energy combined with the deep, hands-on content was fantastic.  The parents learned as well as the kids.  My son said “Trailside never disappoints, but this camp was amazing!”  Highlight of the summer!
Scotch Plains, NJ
The instructor was kind, patient and knowledgeable.  My son felt comfortable asking questions.  He especially enjoyed searching for sassafras and other trees in the woods.
Watchung, NJ
This was a fantastic intro to wildlife for my preschooler.  She wants to know more about animals.  She loved having friends in class, going outside every day and seeing real animal homes in nature.
Westfield, NJ
I loved that the size of camp is smaller and my daughter gets to have more one on one interaction with the counselors to learn more.Fanwood, NJ
Such a great way teach the children about nature while having fun.
New Providence, NJ
My son was very excited to share what he learned at camp.  He loved searching for bugs in all the different habitats.  Wonderful place to learn!
Berkeley Heights, NJ
She enjoyed her time at Trailside camp.  It was more than I expected.  She felt very comfortable and enjoyed every day.  We will come back next year for sure!  Thank you.
Scotch Plains, NJ
My son had a blast.  Teachers and curriculum was great.  Reasonably priced.
Westfield, NJ
We are always pleased with the educational level and hands-on experiences of the Trailside camp.  The staff is very knowledgeable and enthusiastic.
Cranford, NJ
We really enjoyed the camp, a perfect mix of educational and fun activities.
Fanwood, NJ

Trailside Nature & Science Center is Union County’s Environmental Education Center, located in the Watchung Reservation, a 2,065-acre preserve containing woodlands, fields, lakes, streams and more than 13 miles of hiking trails.

This serene setting provides the perfect classroom to have fun while learning about the natural world. Renovated in September 2006, the Center houses 4,500 square feet of interactive, state-of-the art exhibits, including a towering 34-foot American beech tree exhibit that fills the building’s atrium.

This jewel, secluded in the Watchungs, also features classrooms that look out on the Reservation, a multipurpose room, a library, children’s discovery room and a 250-seat auditorium.


Noon to 5 p.m.; Seven Days a Week

Thanksgiving, Day after Thanksgiving, Christmas Eve/Day, New Years Eve/Day, Fourth of July and Easter


452 New Providence Road, Mountainside, NJ  |  908-789-3670  |  Map




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