This massive petrified log has survived as a natural bridge for centuries.
For centuries the Agate Bridge, a 110 ft stone log, has laid across an arrow withstanding corrosion from the elements. The stone log is harder than the surrounding sandstone that it's perched upon. The sandstone is slowly eroding away around this natural bridge. making it vulnerable to collapse. In 1911 a group of conservationists felt that the Agate Bridge needed architectural support and installed pillars beneath the log. In 1917 new concrete pillars were erected to replace the original masonry pillars. The Agate Bridge is a great place to stop and shoot a few photographs while visiting the Petrified Forest National Park.