Rates Packages Availability Booking Info Come camp with us! Available for Your Youth Camping Programs We think you’ll like what you see at Thendara, and hope you’ll consider bringing your group here for your next event. The Thendara 4-H Center is owned by the Maryland 4-H Foundation and managed by a local management board. Scheduling for the facility is done through the local 4-H Extension Office which can be reached at 410-228-8800. When you’re ready to plan an outstanding outdoor event for your youth organization, see yourself at Thendara. Come camp with us!