The Tarim Desert Highway across the Taklamakan desert, in China, links the cities of Luntai and Minfeng on the northern and southern edges of the Tarim basin. The total length of the highway is 552 km, of which approximately 446 km is built across uninhabited areas covered by shifting sand dunes, 20 metes tall, that frequently bury the highway.
To prevent the highway from getting buried by the encroaching sand dunes, rows of vegetation were planted on both sides of the road to anchor the sand with their roots. A massive irrigation system was constructed that pump water from underground reservoirs to sustain the artificial ecosystem. Hundreds of workers were employed, housed every four kilometers along the road who tend to the short, small-leaved rose willows, sacsaoul and buckthorn and make sure they do not die. The water comes from wells, bored 100 meters deep into an aquifer which sits under the desert, which in turn is fed by the rivers that flow down from the surrounding mountains. Despite the high saline content in the water, the green belt continues to thrive.
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