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 These are the remains of a potash facility. An information board explains that potash is used in fertilizer and the United states has normally improred it from Europe but during the First world War, when that wasn't possible, they had to make their own from the alkaline lakes in the Sandhills. UTC Time: 14:51, Thursday 17 August 2017 Local Time: 08:51, Thursday 17 August 2017 Estimate of longitude: 102° 35' 43.40" W = -102.595390° Estimate of latitude: 42° 4' 8.51" N = 42.069030° Possible error on position estimate: 5 metres | |