(Rescheduled from July 28.) The Shenandoah Valley’s unique geology and geography contributed significantly to its agricultural, social, and military history. Join Ranger Rick Ashbacker for this car caravan tour which will explore many of the physical features and materials that were critical to the development of the Cedar Creek and Belle Grove region. Meet at the NPS Visitor Contact Station (7712 Main Street, Middletown, VA). Presented by Cedar Creek & Belle Grove National Historical Park. Free. For more information, call 540-869-3051.