Humberstone Saltpeter Works, UNESCO World Heritage Site, Atacama Desert, northern Chile, Chile, South America

abandoned aged air america american american architecture area areas atacama attraction attractions building buildings chile chilean closed day daylight daytime desert deserted desolate disused during entrance entrances entry entry way entry ways entryway entryways erstwhile exterior exteriors factory former formerly forsaken heritage historic historical historically history humberstone in industrial industrial industry inoperative latin mine mines mining monument monuments museum museums nitre nobody northern of old once one one time open open air out out of service out of use outdoor past photo photos plant plants rust rusted rusty salpeter salpetre saltpeter seeing service shot shots sight sights site site sites sites south south the through time times tourist unesco uninhabited unoccupied use vacant view views way ways works world worth