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Butterfield Canyon?

feature? #900373
created 2019-01-21 by mpimport
location: 40°30'6"N, 112°6'33"W   
assertion #3420648 by mpimport on 2019-01-21: confidence 0%.
boundary of: Lark Ward   (ended: 1933)
entity #3115, assertion #3027167 by mpimport on 2019-01-21: confidence 100%.
accurate within: 100-1000 m?   
assertion #3430648 by mpimport on 2019-01-21: confidence 0%.