We had a great tour of the Valley, hosted by the highly knowledgeable and friendly Tony.
Got to see so many impressive sights, including a number that are only accessible to Navajo guides.
Tony really brought to life the cultural and natural history of the Valley, and was very happy to sing a traditional song as our group sat in a natural arch. He was also very good at pointing out all the great spots for photos.
Our tour was on an open top (but with a sun-shade cover) 4x4, so we had great views throughout. Tony also provided bottles of cold water, which was very welcome in the sun.
Would certainly recommend Monument Valley Tours.