Grand Canyon National Park, Arizona
According to a2zdirectory.org, the Grand Canyon National Park is one of the oldest and most famous parks in the United States and is located in the state of Arizona. The gorge is about 443 km long and the width can vary from 16 to 29 km and the depth is no less than 1829 meters. It is impossible to walk down to the foot in 1 day and up again the same day. This takes about 2 days. The park…