However, there were some deposits that were buried in haste, but even those have booby traps and bombs. The last month claimed the lives of 4 treasure hunters and more were injured in 2 incidents that I read in the news. They died from tunnel collapse and carbon monoxide poisoning as in news. Reality is they hit bombs be they large or small which caused caveins and poisonings were IJA 731 high tech bio and chem warfare. The Imperial government estimated how much treasure they would accumulate and preexcavated and prepared areas prior to war. However, they underestimated the amount they would get which left them holding ship and truck loads full of treasures that had no place else to go. They started hastily burying that in existing command bunkers, mine shafts and deep under dirt. Those later deposits are no booby trapped to fall deep underwater down the natural fissure cracks and lost forever like those deposits that were prefabricated.