Definitely recommend this tour and trip. The sunset at the summit of Mauna Kea is breathtaking and the star gazing afterwards was the most amazing I have seen when star gazing. So many stars and galaxies!! (The Milky Way looks like clouds in the sky!). Hunter, our guide, was very personable and knowledgeable. You do spend a lot of time on the bus and its very cold up top but this tour takes care of you and is highly recommended.