The "Bennington Triangle" is a name given by paranormal author Joseph A. Citro to denote an area of southwestern Vermont within which as many as ten people have disappeared between 1920 and 1950. This "mystery triangle" centered around Glastenbury Mountain, includes some or most of the area of the towns immediately surrounding it, especially Bennington, Woodford, Shaftsbury, and Somerset. UFOs, super natural experiences, disappearances, a possible serial killer and so much more in this area.
Resources:
Wikipedia
Reader’s Digest
Listverse
Allthingsinteresting.com