911-6394 - A differential GPS being used in real time kinematic survey, to survey the extent of the Durham canyon flooding feature, County Durham, England, United Kingdom, Europe
911-6357 - A differential GPS being used in real time kinematic survey, to survey the extent of the Durham canyon flooding feature, County Durham, England, United Kingdom, Europe
911-6358 - A differential GPS being used in real time kinematic survey, to survey the extent of the Durham canyon flooding feature, County Durham, England, United Kingdom, Europe
911-6392 - A differential GPS being used in real time kinematic survey, to survey the extent of the Durham canyon flooding feature, County Durham, England, United Kingdom, Europe