Kids, come down to Great Hollow to create your own mini-ecosystem in a jar and watch the water cycle in action! We’ll fill quart-sized mason jars with everything needed for your little kingdom, including soil, pebbles, real plants, and mini dinosaurs, dragons, unicorns, or fairy figurines to keep the plants company. These enclosed, self-sustaining ecosystems can last for years if properly taken care of. One terrarium is known to have survived for a record-breaking 50 years!

Open to children ages 5-12 (children under 10 must be accompanied by an adult throughout the program). $15/child for members and non-members. Includes all materials. Please register by emailing Sena at .