Camp Mataponi is an all-girls sleepaway camp in Naples, Maine, United States, for girls approximately 7 to 15 years old. The camp is situated on Sebago Lake and accounts for over 5,000 feet of lakefront property. Camp Mataponi has grown to accommodate about 500 campers. Originally, the camp was called Highland Nature Camps. In the 1940s, it was renam…Camp Mataponi is an all-girls sleepaway camp in Naples, Maine, United States, for girls approximately 7 to 15 years old. The camp is situated on Sebago Lake and accounts for over 5,000 feet of lakefront property. Camp Mataponi has grown to accommodate about 500 campers. Originally, the camp was called Highland Nature Camps. In the 1940s, it was renamed to Camp Mataponi by new owners Morton J. Goldman owner of Camp Takajo, and Samuel and Lee Kessler, of Teaneck, New Jersey, who also served as head counselors. The extraordinary culture and proud traditions of Camp Mataponi were thus born. The name Mataponi is of the Virginia Native American Tribe, historically located near the Mata, Po, and Ni Rivers.