Dates Shown: Thursday, February 15, 2018 - 09 to Sunday, July 22, 2018 - 20Image Slide: Video: Link: http://enchantedmountains.com/events/2018/04/great-valley-bicentennial-7610Slide Categories: Allegany State ParkEllicottvilleGeneral TourismGovernmentHoliday ValleyRandolph