We drove to Ganado to visit the Historic Hubblle Trading Post, on the Navajo Reservation is in its original condition. Hubbell Trading Post National Historic Site is a meeting ground of two cultures, the Navajo and settlers who came to the area to settle in what is now northeastern Arizona in the late 19th century. These settlers came from Mexico from the south and eastern United States. In 1878, John Lorenzo Hubbell purchased this trading post. Hubbell family members operated this trading post until it was sold to the National Park Service in 1967. The trading post is still active.
Visited the Painted Desert, the desert is composed of stratified layers of easily erodible siltstone, mudstone, and shale of the Triassic Chinle Formation. These fine grained rock layers contain abundant iron and manganese compounds which provide the pigments for the various colors of the region.
We then drove through Petrified Forest, which is made up of downed trees accumulating in river channels in what became the park, these trees were buried periodically by sediment containing volcanic ash. Groundwater dissolved silica (silicon dioxide) from the ash and carried it into the logs, where it formed quartz crystals that gradually replaced the organic matter. Traces of iron oxide and other substances combined with the silica to create varied colors in the petrified wood.