Devil's Golf Course: Salt Crystals That Sound Like Breaking Glass

The National Park Service's description of the Devil's Golf Course is direct: the salt crystal formations are so jagged and dense that only the devil could play golf on them. The name dates to the nineteen twenties, when Death Valley tourism was just beginning, and promotional writers were looking for phrases that would capture the landscape's extreme character without being merely geological.

What they captured, inadvertently, is also acoustically accurate.

Stand still on a quiet morning at the Devil's Golf Course and listen. The halite crystal formations, sodium chloride precipitated from the brine that once covered this basin, expand and contract with temperature. When the sun hits the salt flat in the early morning, the crystals that formed overnight in the cold crack and pop and tick as they warm. The sound is faint. It requires stillness and attention to hear. But it is there: the geology of Death Valley making itself audible through thermal expansion.

The crystal field extends for several miles along the valley floor. The formations are complex and irregular, not the flat salt crust of Badwater Basin but erupted shapes, some finger-like, some like broken crockery, some like small frozen waves. They are sharp enough to cut through shoe leather. The NPS trails do not enter the field.

This is one of a very few places in the national park system where a geological process is producing a sound you can hear without equipment. The crystals are growing and cracking continuously, responding to daily temperature cycles that swing by forty or fifty degrees between night and day. The valley floor is not silent. It is working.