Geocaches are starting to get banned locally. in General geocaching topics Posted January 17, 2011 JMO, wouldnt an ammo can make a terrible bomb? Its pretty sealed shut, but what do I know about bombs. Except those things are made to hold ammo, which contains gun powder, explosives in large quantities, they are made to restrict the damage to the ammo. This leads me to believe they are relitivley resistant to things that would ignite, they are water tight, it just seems silly to think an ammo can could possibly be a bomb out in the middle of the woods, if it were really going to terrorise someone, wouldnt it do more damage mentally and psychologically in the middle of a downtown area? Yes, ammo cans are quite destructive IED's. They are banned in most Parks just like PVC pipe hides. Please read the giudelines. Oh, oops. Thank for the correction.