The Portville Historical and Preservation Society is an educational agency, chartered by the Regents of the State of New York. It was established in 1986 in response to renewed interest in the preservation of Portville's past.
With over 65,000 acres, this is the largest state park in New York State and is open year 'round with a multitude of outdoor activities for every season and every taste.
The stadial site in Otto is a place like no other as it is one of only two known places in New York to have preserved till layers from first three glacier movements (of four) during the Pleistocene Ice Age