Making Ice in the Desert: Yakhchal
Making Ice in the Desert was always possible!
This is one of the best post I have found on Yakhchal. Around 400BC, the Persian empire were making ice and preserving it through the hot summers…. Thanks to Graham McKay for putting all this info together and there are a few good links to read on at the end of his post.
If anyone knows of smaller modern version of this system please let us know how to build, thanks!!!