BLOWSAND HILL
Wind-blown sand is a highly effective agent of abrasion, as anyone who has been in a sandstorm will agree. Wind is one of the few agents that can and do carry material uphill. Here, the wind carries sand for miles before piling it up into this huge dune. Perhaps the most popular spot in the park, Blowsand is illuminated by a circle of headlights on many weekend nights.

DEVIL’S SLIDE
This 200 foot-high granite and sand island is named for the challenge it presents to the OHV enthusiast. It is actually an ancient decomposing mountaintop. A dark coat of desert varnish covers the rocks as a result of exposure to sunlight. There are several old hidden mine shafts along the mountainside. The mines are said to be haunted. People have reported seeing flickering lights near the mines at night after a rainfall.

DEVIL’S SLIDE
This 200 foot-high granite and sand island is named for the challenge it presents to the OHV enthusiast. It is actually an ancient decomposing mountaintop. A dark coat of desert varnish covers the rocks as a result of exposure to sunlight. There are several old hidden mine shafts along the mountainside. The mines are said to be haunted. People have reported seeing flickering lights near the mines at night after a rainfall.

BARREL SPRINGS
These mesquite sand dunes are an oasis for wildlife. The springs seep from the ground, especially after a heavy rain. Coyotes often dig holes to drink. Part of the area is designated as a cultural preserve. Archeological investigations indicate that several Native American groups and early settlers used the area. The shade and availability of water made it a convenient spot to rest, to meet, and to trade goods. Some of the dunes have been fenced to allow for natural restoration. Please do not ride close to the edge of the dunes as this kills the mesquite roots. Without these shrubs, the sand dunes would blow away.

SHELL REEF
Park beneath the reef and examine the soil. You will find not rock or sand but fragments of fossilized oyster shells. Look closer and you will find entire shells and even pieces of the reef which have fallen down the slope. The reef is estimated to be 4 million years old! It was pushed out of an ancient sea during a time of tremendous upheaval when the distant mountain ranges were formed. Please help preserve the reef. Find other “hills” to climb, and encourage others to do the same.

GAS DOMES
These mysterious water holes produce large gas bubbles that rise up through muddy water. The water travels to the surface, emerging through a natural crack in the desert floor.

PUMPKIN PATCH
This unique landscape is the result of wind and water continuously eroding the surface soil and revealing these globular sandstone concretions. Such concretions are believed to be formed by the natural cementing of sand particles to a small object such as a piece of shell, a grain of sand, or even an insect. Please help preserve the Pumpkin Patch and the nearby ridges where new pumpkin-size desert “pearls” are emerging.

LOST OR INJURED PERSON
If a member of your party becomes lost, don’t panic. Make a note of where the person was last seen and at what time. Locate a Ranger either in person or call the Discovery Center during business hours. The Rangers know how to conduct search and rescue operations. If possible, send someone to find a Ranger. Most business establishments in the Ocotillo Wells area know how to contact a Ranger quickly. Park Rangers are the closest source of help, and are usually the first professionals to arrive at an accident scene.