This trail provides the visitor with an easy to hike pathway to a scenic box canyon where prehistoric residents left their mark carved into the canyon's gray volcanic walls. Roughly 1,000 years old, some ancient artisan or artisans pecked images into the dark basalt using another rock for a tool. These images are call petroglyphs. The message that they portray suggests that the area was important to the ancient communicator as a hunting ground. One of the petroglyphs is a dramatic depiction of a deer herd entering the canyon. Take note of that and keep a sharp eye. This area is still an excellent place to encounter wildlife.

While you're visiting the Keyhole Sink Trail, please respect the irreplaceable traces of the past that you find along with it. Leave them undisturbed so that others may enjoy them as you have.

Trail Layout: The trail traverses easy terrain through a ponderosa pine forest. The return trip from Keyhole Sink is over the same trail. The trail is marked for cross-country skiing with blue triangles.

Length: 2.0 miles round trip

Hiking Time: 1.5 hours

Rating: Easy

Recommended Season: Year-round. May be muddy in spring. Cross-country skiing is often possible.

Use Restrictions: No motorized vehicles.

Trailhead Location: This trail starts on the north side of Historic Route 66, across from the Oak Hill Snowplay Area.

Access: From Williams, take I-40 east to the Pitman Valley Exit (#171). Turn left and cross over the Interstate. Proceed east on Historic Route 66 for about 2 miles to the Oak Hill Snowplay Area. The trail begins on the north side of the road. Please park in the lot provided.

From Flagstaff, take the Parks Exit (#178). Turn right (north) and then turn left (west) onto Historic Route 66. Drive west for about 4 miles to the trailhead.

Travel Time: About 20 minutes to trailhead from Williams.

Road Condition: Paved all the way.

USGS Map(s): Parks (Forest Map may also be useful; may be purchased at the Visitors Center.)