From glacier action to recreation, this valley has seen tremendous changes. Park staff will share highlights from its history of coal mining, farming, and oil drilling, to the formation of one of PA’s premier parks. Learn more of the park’s history while cruising Lake Arthur on the Preston’s Pearl pontoon boat. Seating is limited. Cost: Adult-$19, Child (3-12) $10, Infant (2 and Under) Free.  A temporary $1.00 fuel surcharge per adult ticket will apply to all public cruise reservations booked on or after May 23, 2026.Pre-registration required.  To register call the Owlet Gift Shop at 724-368-9185 or use the ticket website  https://www.morainepreservationfund.org/activities/boat-tours-cruises/