Burying a cache of supplies you might need in an emergency situation is a great survival strategy.
You could plant more than one cache along your bug out route, or in different locations if it’s an “urban cache”. However, never bury it too close to your actual bug out camp in case it’s now occupied by others outside your group.
One of our favorite folks, Survival Lilly, uses a plastic, general purpose first aid container to store the supplies to be buried: no rust and the rubber seal makes it waterproof (for a few years).
So what’s in it? Here’s the list: