 GEOG: After Jay and Silent Bob escape into the sewer pipe in Utah  and make it to the end of the line at the dam, two things occur once  they climb to the top: 1. There is no water on the other side  (mountains can actually be seen), and 2. The background on the  waterfall side of the dam is of the mountain face of Pyramid Lake,  just north of Castaic, California, named for the way the cut out  face looks like a pyramid. This would mean that the pipeline ran all  the way from Utah to California and that they made it in the same  day on foot.