Boiling water with stones may save your life . In a survival situation, the basic rule to remember is the rule of 3’s. You can survive 3 weeks without food, 3 days without water, and 3 hours in inclement weather either too hot or too cold. Of course these are the basic rules and many factors can extend or reduce these times. This basic time frame sets your priorities for survival. The first basic need is shelter. Once shelter is established, your next immediate need will be water, especially in hot environments. Depending on what gear you have with you, you may or may not be able to purify water for hydration. Boiling water with stones is a technique to use that may save your life.