Here we have walked down the side of the lock at the Cayuga-Seneca Canal and reached the end where the closed gates lead down to the next lock way below. These locks were so long and deep they were almost scary. Looking at the strong steel gates holding back all that fluid, what do you suppose all that water weighs?
Click image for a larger view:
This view was taken on a small narrow and metal grated gangplank walkway that traversed the canal. You could look straight down through the walkway to what looked like over a hundred feet. It was kind of gut wrenching to walk across this. The following photo shows the view to the right and down the next lock that is empty or low in water: