The outer fossils are one of the world's amazing excursions to see Devonian fossils in their natural "habitat." We can only offer hikes in the late summer and fall when the upper gates of the McAlpine Dam are closed. This hike is moderately rugged and without shade, so wear a hat and bring water. You will do a little wading, the worst is about two-feet deep with a moderate current. There will be a lot of walking on uneven limestone ledges. Wear enclosed shoes for your safety.
Learn about the geology, history, and river dynamics & engineering of the lock & dam and 1870 railroad bridge. You will see birds and other wildlife on this outing.
Hike lasts about 3 1/2 hours. Meets on the deck. It is geared for adults and children 12 and over. Show up with enough time to sign a liability release form and use the rest rooms in the Interpretive Center before you go outside to explore.