Mesa Verde, Spanish for green table, offers an unparalleled opportunity to see and experience a unique cultural and physical landscape. From approximately A.D. 600 through A.D. 1300 people lived and flourished in communities throughout the area, eventually building elaborate stone villages in the sheltered alcoves of the canyon walls. The cliff dwellings were created in the last 75 to 100 years of occupation at Mesa Verde. In the late 1200s, within the span of one or two generations, they left their homes and moved away. Leashed pets are allowed in developed areas, such as picnic areas, parking lots, and along gravel and paved roads. Pets are not allowed in the buildings or on trails, and may not be left unattended in vehicles. Leashes must be no longer than six feet.