@Hisabah water treatment.....
@Hisabah If you see any big arrows out in the desert, those are actually from the 1920's, I think. They were used for air mail planes before they had radiobeacons for navigation.
https://savingplaces.org/stories/the-true-story-behind-those-giant-concrete-arrows
@Hisabah ๐๐๐๐๐