Starting with a simple sketch, dad digs the enormous hole, installs plumbing, and proceeds with setting up the concrete prep-work. The pool includes two creeks, a waterfall, and a cave!
He brings in some professionals do the shotcrete and waterproof coating. When the pool itself is all done, dad adds a fire pit and some patio furniture to complete the back yard.
For actual photos of the whole project, see this Yahoo News article; Amazing Swimming Pool