In 1997, Antelope Canyon was discovered on Navajo land adjacent to Page. This natural slot canyon, formed by erosion, has created a steady increase in tourism for Page, as word spread of the beauty of the canyon. Several tour companies, all Navajo owned, now offer guided excursions into Antelope Canyon. Visitors are not allowed to explore on their own, and must be accompanied by a Navajo guide from one of the local tour companies. Another natural treasure that has recently increased in popularity is Horseshoe Bend Overlook. This dramatic view from above allows visitors to see the U-shaped turn in the Colorado River. Half of Horseshoe Bend Overlook is owned by the City of Page. The other half is on Navajo land and is privately owned. On the side owned by the city, visitors can pay a small parking fee, and walk about 20 minutes to the overlook.