This will work anywhere, but if you are in a place where the days are hot and the nights are cold then it will work even better. Each solar still you make can generate about a pint of water a day, so if you have no other water source, that means you will need to make eight to twelve of these stills to get to the four to six liters of water a day that are usually required in survival situations.


To make the still, dig a shallow hole 18 inches deep and 36 inches wide. Put a pan down in the center of the hole. If you don't have a pan you can also make a pan out of a sheet of plastic covering a dug-out part of the bottom of the hole. Weigh the top plastic sheet down at the edges with rocks and then very, very carefully, drop a large pebble in the center of the plastic sheet to create a low point. Your dish needs to be under the low point, so it can collect the water droplets as they condense and roll down the sheet.


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