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Enjoy Nature…Hiking, Boating, Swimming

Thendara Mountain Club was formed as an outdoors club in 1916 under its parent group, the Green Mountain Club. We currently have about 300 members, and are always looking for other nature-lovers to add to our convivial group. We are a group of diverse individuals and families eager to maintain the community spirit of the club. 

In our bulletin, you will find a schedule of hosted weekends at Camp Thendara. These weekends include meals, and various lodging options for those who wish to stay overnight. The volunteer host plans and supplies all the food and assigns the work of preparing or cleaning up after meals—at least one chore per person. The costs of the food are shared, and the appropriate day or overnight house fees are assessed.  All members are expected to share in necessary tasks and, when qualified, in the leadership of hikes, trips, and camp weekends. Leaders/hosts are responsible for the safety and comfort of the group.  Therefore, cooperation and acceptance of, and appreciation for, the leaders/hosts’ suggested arrangements and reasonable instructions are expected of all who participate in TMC activities.

Members can work toward obtaining a Gate Key (providing entry to the grounds) and then a Lodge Key by completing a series of workshops, attending hosted weekends, and meeting other guidelines. 

Individual and family membership is open to those 18 and over. A family consists of two members who reside at the same address and receive one bulletin. Any dependents 22 years old or younger (as of Jan. 1) who reside at the same address can be considered dependents and partake under that membership. A dependent will have access to the club while in the company of at least one club member who accepts responsibility for the dependent. A dependent is not considered a member and does not have voting or other membership rights. This does not prohibit an 18-year-old from becoming a member and enjoying full membership rights.

An important part of Thendara Mountain Club is trail maintenance, keeping miles of trails in Harriman State Park accessible for hikers. Our members regularly mark blazes, clean up, and maintain over 10 miles of Harriman and Bear Mountain trails. 

The club assumes no responsibility for injuries or damages sustained by anyone using the club’s facilities or engaging in any of its activities.  Waiver forms are stored by the registry and are to be signed on the first visit.

Our club operates Camp Thendara (Camp T-20) under the jurisdiction of the Palisades Interstate Park Commission. The camp gate is situated on Seven Lakes Drive, 1.8 miles north of the Kanawaukee Circle and 2.0 miles south of Tiorati Circle.

To contact the New Member Committee, email: 

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