Short tour is the least amount of information available for a civilization changing achievement and charge still money for a tour. The guide was Tom on Aug 1st, 2013. Tom has a job as a tour guide. Tom likes getting paid for his job but apparently hates doing his job. It was a speed walk with no information. I asked him a question and received more than a grunt and less that reasonable explanation. Very disappointed. I give it 4 stars because it is the Hoover Dam and that alone is amazing.