What Is It?
In Central Arizona, just north of Payson, Tonto Natural Bridge State Park is home to one of the largest natural travertine bridges in the world. The bridge is 60 feet thick, sits 183 feet off the ground and tops a roughly 400-foot-long tunnel that measures 150 feet at its widest point.
Catch Fall Leaves
When visiting, enjoy the short hike down to the bottom of the waterfalls that gently cascade over the bridge and surrounding rocks. The water flowing down from the bridge has created an ideal environment for the aspen, cottonwood and elder trees that brighten the park with magnificent fall colors. While the colors peak in later October, they continue throughout November.
How Was It Made?
The natural bridge is made of a crystalline form of limestone, known as travertine. Broadly, the rock forms when spring water rich in calcium carbonate evaporates, leaving the calcium behind. The calcium built up into a large structure, before a hole was worn through the rock, creating the bridge.
What To Do
In addition to the travertine bridge, the park has four hiking trails, a picnic area, a group use area and the historic Goodfellow Lodge. All trails are shorter than a half-mile, but they are steep and strenuous, so be sure to pack drinking water. The trails close an hour before the park closes, and no dogs are allowed on any of the trails.
More Information
The state park is open daily from 9 a.m. to 5 p.m. but closed on Christmas. On Thanksgiving and Christmas Eve, the park closes at 2 p.m. Admission is $7 for adults, $4 for youth 7 to 13 and free for children 6 and under. If visiting in the winter, be prepared for reduced services. Go to azstateparks.com/tonto for detailed information.