Saddle Mountain is a landmark peak in the deserts west of Phoenix in the town of Tonopah, south of Interstate-10. Travelers driving eastbound will see the distinct saddle shape of this peak, which is a "volcanic upthrust". The mountain is composed of tuff and rhyolite, and features many cliffs, spires and odd formations. Nearby peaks such as Burnt and the Palo Verde Hills have more of the "bread-loaf" shape of ancient lava blobs and flows, so the whole area clearly shows evidence of volcanic activity.

The eastern summit is the highest, at 3,037 feet, with 1,777 feet of clean prominence. From a parking area on the north, there is a decent trail that leads to a small saddle high on the ridge, and from there, simple scrambling and scanter trails lead to the top. The climb is short, just 1.6 miles each way, but a workout, as you gain nearly 1,600 feet. The views are spectacular the whole way up and down. The summit ridge is famous for its sheer west-facing cliffs. Bighorn sheep are in these hills.