Running south from the tiny hamlet of Arivaca, Tre Bolotis crosses desert washes, climbs a high ridge via narrow winding shelf roads, and descends into an oak-strewn valley. The trail begins in the Fraguita Wash and crosses a short stretch of well-marked private property. The ridgeline sits high above the surrounding landscape, providing vast views of southern Arizona. Narrow blind curves make you slow down and concentrate on the road. The descent on the southern end is via steep switchbacks. The trail drops into a long, narrow valley dotted with large oak trees. There are plenty of excellent shaded campsites in the valley. The trail ends at a private ranch gate.