Woke up at 5 am and went to see the sunrise at the Grand Canyon. It was freezing but well worth it. Something we will never forget. Then we set off to Las Vegas via the Hoover Dam. I drove the RV too, which was very cool but slightly scary driving a high sided vehicle on a windy day! Drove to the Hoover Dam and went on a tour. Got some great photos which probably don't do it justice. Absolutely immense sight and a fabulous work of engineering. Definitely worth a visit.