The Visitor Center Exhibits are open Thursday – Saturday, from 10 a.m. – 3 p.m.
Visitor Center Bathrooms open daily, 8 a.m. – 6 p.m.
Please note this schedule is subject to change as we closely follow Covid community levels for Suffolk County. 
© Dan Ritzler/TNC
February on the Preserve
Do you love nature as much as we do? Come out and experience Mashomack in the depth of winter this February. Trails are open daily for you to take advantage of all that winter has to offer. Take a hike along the trails to witness the beauty of frozen kettle ponds or soak in the silence of the forest at rest. If snow arrives, shine up those cross-country skis or snowshoes to traverse the winter landscape. Feel like enjoying nature but prefer to do it with friends? You can also join us for one of our upcoming programs!  See below for a list of upcoming opportunities.

Winter Programs 

Saturday Seedlings: I Love Nature
Date: Saturday, February 4th, 9 AM – 10 AM
Do you love nature as much as we do? Join us at Mashomack as we explore the natural world around us and learn about different animals and habitats at the preserve. Activities will include crafts, snacks and/or exploring our trails. Ages 4-8. Advanced Registration is Required.


Mashomack Point: A Tour of the Katharine Ordway Wildlife Refuge  
Date: Saturday, February 11th, 1 PM – 4 PM
Dedicated to a visionary and generous nature lover, Mashomack Point is opened for a guided walk just once a year. This mid-winter truck ride and hike will allow us to explore this unique area’s woodlands, kettles, and fields, culminating with a breathtaking view of Northwest Harbor. Dress warmly. Advanced registration required.


“Special Winter Break Program* Winter in the Woods
Date: Friday, February 24th, 9 AM – 2 PM
Get the kids out of the house! Winter is a little-explored time of wonder. Come spend the day during our special winter break program at Mashomack. We will explore the woods by foot or by truck, build a nestbox for our bird friends, search for signs of deer and other wildlife, and make a winter themed snack. Fun for ages 7-10. $50, scholarships available.   Advanced registration required.


Rare, Big and Odd Tree Tour at Mashomack 
Date: Saturday, March 5th, 10 AM – 12 PM
Mashomack’s forest harbors some unique and rare trees. Come explore Mashomack by truck and on foot to witness the survivors of devastating diseases, colonization and turbulent weather. We’ll view different forest types and find very tall tulip trees, a huge white oak, a healthy elm tree, and an American Chestnut. Bring your camera and be prepared for off-trail hiking. Advanced registration is required.


Saturday Seedlings: Spring Has Sprung!
Date: Saturday, March 25th, 9 AM – 10 AM
It’s officially Spring! Join us at Mashomack as we explore the seasonal transition from Winter into Spring. Activities will include crafts, snacks and/or exploring our trails. Ages 4-8. Advanced Registration is Required.


To reserve your spot in any of the above programs, please email MashomackPreserve@tnc.org.


Call for Volunteers 2023! 

As we prepare for the year ahead, we’re looking for dedicated volunteers to join our team! Much of the work we do can’t be done without the help of our dedicated volunteers. Love photography? Talking to visitors? Great with a computer? Enjoy spending time working outside? We’d love to learn more about you and what skills or passion you’d like to bring to the preserve.

Please email MashomackPreserve@tnc.org to learn more. 


© Rebecca Kusa/TNC


Save the Date!

Mashomack’s Environmental Explorers program is returning this summer.

Registration details will be announced soon.  

Week 1: July 10th – 13th
Week 2: July 31st – 3rd  
Week 3: August 14th – 17th


February Book in the Woods 

Owl Moon by Jane Yolen 

Come take a self-guided, half-mile walk and read as you go.  A walk in the winter woods is a magical adventure for a child. This family favorite will make you want to go owling too! A perfect family nature adventure and a great way to get your kids into the outdoors. 


10 Places to Watch in 2023

The world just signed a new deal for nature

—now it’s time to put it into action.

Find Out More Here 



Click on trail map to download. 



The Nature Conservancy works across New York, the United States and in 79 countries and territories to conserve the lands and waters on which all life depends. Learn more about our work at nature.org/NewYork 

Join us today


Copyright (C) 2021 The Nature Conservancy. All rights reserved.


The Nature Conservancy
79 South Ferry Rd
PO Box 850
Shelter Island, New York 11964 



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