The Tower is 775 feet about the falls. I was glad we were able to do the revolving dining room verses the buffet which was suppose to not revolve. They have it timed so that while you wait on your food to come you get to see the falls. Then while you are eating and finishing up you are seeing whats to the north of the falls. Here's the pictures I took. (note: I had both my camera and cellphone with me and used both & was glad I did. The depth perception was different for them).
dolostone of Silurian age. This dolostone is what is so resistant and makes the falls as spectacular at they are.