Sedona Subway Cave

To get started, park at the Boynton Canyon Trail parking lot. From there, keep an eye out for a big burned tree that's black and gray, about 2 miles into the hike. When you spot that tree, turn right - it's the exact spot you need to go to reach the Subway Cave from the Boynton Canyon Trail. After about 0.75 miles on the offshoot trail, you'll come across a slope that leads to the Sedona Subway. It's not just the Subway you'll find there, though; you can also see cliff dwellings and petroglyphs.

(Submitted by Brian Good)