USA - Arizona - Petrified Forest National Park
The Petrified Forest National Park is situated in Navajo and Apache counties in northeastern Arizona. Named for its large deposits of petrified wood, the park covers about 146 square miles (380 km²), encompassing semi-desert shrub steppe as well as highly eroded and colorful badlands. The Park is known for its fossils, especially fallen trees dating back to the Late Triassic, about 225 million years ago! The earliest human inhabitants arrived at least 8,000 years ago. A changing climate caused the last of the park's pueblos (villages) to be abandoned by about 1400 CE. Later, more than 600 archeological sites, including amazing petroglyphs, have been discovered in the park. Pictures from January 2012.