The Yakhchal reminds me of this strategy for preserving a water supply through summer in the Himalayas https://www.theguardian.com/environment/2017/apr/22/the-i

The Yakhchal reminds me of this strategy for preserving a water supply through summer in the Himalayas https://www.theguardian.com/environment/2017/apr/22/the-ice-stupas-of-ladakh-solving-water-crisis-in-the-high-desert-of-himalaya https://www.theguardian.com/environment/2017/apr/22/the-ice-...