ナショナルジオグラフィックのインスタグラム(natgeo) - 1月27日 02時36分

Photograph by George Steinmetz One of the last great examples of pit agriculture struggles to endure in a remote part of the Algerian #Sahara. Here the water table is just below the surface, and is drawn up by hand and donkey to sustain date #palms in the midst of a sea of mobile sand dunes. This ancient method of cultivation was once found throughout the Middle East, but increasing population and electric pumps are causing the water table to drop. #Algeria #aeolian #wind #dunes #barchan #agriculture #conservation #paraglider To see a TED talk about my 30+ years of fieldwork in Africa, follow link in bio of @geosteinmetz

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