Yes, GPS coordinates are important! Do the Walter White thing -- bury your cash in the dessert in plastic barrels that cannot be corroded. Do it in the middle of the night. Do it yourself. Do not use Huel and Koby, or they'll be in Mexico. All I'm sayin'. Rent a car. Wash it thoroughly afterwards. Pick a piece of land that will not be developed. Get the GPS coordinate. Then store the coordinates in a clever way, like as numbers on a lottery ticket.

I learned everything I need to know about caching on Breaking Bad.