I heard you talking about your parents enjoying their rides up the canyons and wondering if rocks actually fall. Well my brothers and I own and operate Lakefront Auto Glass up in Layton and we see all sorts of crazy broken windshields. This summer we replaced a windshield for a customer out in Hooper that had a rock fall and go right thru their windshield. Luckily they were okay but scared to death. I attached a picture for you to check out. If it down download you can check it out on our face book page Lakefront Auto Glass, Inc and stroll down just a little bit. Once again I love the show.... Keep it up.