The Thar is the most densely populated desert on Earth, carrying roughly 83 people per square kilometre. The sand west of Jaisalmer has therefore never been empty. Herders, masons and caravan traders have crossed it for centuries. Many of the tracks that jeep safari in Jaisalmer tours follow today were pressed first by camel hooves and cart wheels. Jaisalmer stands on a ridge of yellow sandstone at the western rim of Rajasthan, some 60 kilometres from the Pakistan border. Its fortunes were built on a branch of the overland trade route that moved indigo, opium and dates between Delhi and Sindh. Gadisar Lake, cut in the fourteenth century, still marks where that water-scarce economy began. Sam Sand Dunes, roughly 42 kilometres west of Jaisalmer Fort, is the closest substantial transverse dune field to the city. The open desert here carries a plain address: Sam Sand Dunes, Thar Desert, Jaisalmer, Rajasthan, India. Entry to the desert itself costs 0 INR. Vehicles, guides and camps are what carry a fee. The dunes are young and restless — aeolian sand laid over Jurassic limestone that still holds marine fossils. Southwest monsoon winds reshape their crests each summer, and rainfall averages under 200 millimetres a year, most of it falling in July and August. Wildlife persists in the gaps: chinkara gazelle, desert fox, and the great Indian bustard, protected inside the 3,162 square kilometre Desert National Park. Khejri and rohida trees mark the hardpan between dune lines, and shepherds still move flocks along routes mapped by wells rather than roads. Beyond them stand the sandstone cenotaphs of Bada Bagh and the abandoned lanes of Kuldhara, emptied in the early nineteenth century and never resettled. What makes a Jaisalmer desert safari worth attention now is less the sand than the layering. Turbines of the Jaisalmer wind park, one of the largest wind clusters in India, turn on the horizon above villages where Manganiyar musicians still play kamaicha and khartal at dusk. Local operators, many from families who once ran camel caravans between Sindh and Marwar, have folded that repertoire into the modern jeep safari in Jaisalmer tour: dune crests, Kalbeliya dance, a night under open sky. The desert has simply changed its vehicle. The route, the music and the horizon stayed where they were.