Falls Creek (left) and Afternoon Creek (right) with the Cascades Highway at the bottom of the photo.Looking up Afternoon Creek at boulders that are as big as a house.100 plus tons of rock on the highway below Falls Creek. The largest rock is 50 tons. As rocks tumbled down the hillside, a majority of them bounced off the highway, causing damage as seen above, and then landed in the Skagit River below.