The Organ Pipes are a spectacular rock formation of ochre red volcanic rhyolite columns in the Gawler Ranges National Park.South Australia. A four-wheel drive is necessary to get to this place, but well worth the long trek. There are bush-camping sites in the park, a couple suitable for caravans. This is the outback , and water must be taken with you. Great for bush-walking and four-wheel driving.We will definitely make a special trip just to the Gawler Ranges, one day.