The hill is easily accessible from Calle Obregon. To get there, drive west on Obregon, until you pass the main part of the city (you'll pass a John Deere dealership on the left, and the businesses will start to be farther apart from each other).
Take a left at Calle Sonora (clearly marked by a large overhead sign). Follow the road as it does a dog-leg left turn, then take the first right. When the bumpy dirt road comes to an end at another street, take a right turn, and then your first left, and that road will take you to the hill.
The distance pictures of the north side of Cerro Prieto (like the top photo on this page) were taken from another hill in Caborca.The others were taken during a hike up the south side of Cerro Prieto, and a descent on the hill's west side.
But you don't need to hike the hill to enjoy Cerro Prieto, there are ancient rock-art etchings, or petroglyphs, on the western face of the hill. Unfortunately, they're mixed in with modern rock graffiti, some of it covering the ancient treasures.
Another word of warning about climbing the hill, the first 150 or so is fairly loose rock. Above that though, is easier climbing on the black volcanic rock that gives the hill its name.
Also, be aware that the hill is home to a number of animals and insects, some that can be dangerous (during our climb we found a millipede, although it was dead), so wear appropriate footwear and clothing.
The south side of Cerro Prieto offers views of the mission at Pueblo Viejo to the west. To the south is an Infonavit housing development, and more hills further to the south.
The western exposure looks out over desert land that used to be cotton fields that provided the fiber to support the war effort during WWII. The fields provided a viable cotton industry for Caborca from the 1940's to the 1960's, when synthetic fabrics made growing cotton less lucrative.
Further west you can see Sonora highway 044 as it extends past local ranches on the route to the coast of the Sea of Cortez.
And of course, from the north (accessed from a road on the north side of the hill, and then by hiking up) offers views of Caborca.
