It is generally not a good idea to bury components in the ground without sealing it in a watertight container first. Although when it comes to some firearms, like an old AK or Mosin Nagant, you could probably store one in a muddy creek bed for a few decades and they would still cycle like the day they rolled off the Siberian assembly line. For those of us who want something a little more secure however, this Chinese surplus mortar storage container is perfect for burying your ammunition, knives, barrels or anything else you can think of. Burying supplies in a random location and marking the GPS coordinates might also do the trick. If the apocalypse comes, it will be nice to have little supply caches all over town. Like most ordinance storage containers, this one is watertight and measures in at 2-feet long and has an inside diameter of 3.5 inches. The rubber seal and locking lid ensure that no dirt or moisture will get in. If western civilization falls, you can sleep well knowing that looters will have no idea where you stored all your valuable supplies.