Geology of Hope Valley & Sudden Aspen Decline, by Al Graf
Former NASA Apollo geophysicist Al Graf will give a presentation that will focus on the geologic history of the Hope Valley area and share information on the aspens and the emerging Sudden Aspen Decline (SAD) that is taking place. He will continue his presentation outside the tent for a viewing of the landscape.
Al Graf reprises his fascinating presentation from the 2016 festival. After the Tent Talk, sign up for a guided geology hike with Al Graf.
FREE! Join us under the main festival tent.