Wow. Surprised it wasn't discovered earlier. "About 1,400 firearms and 1,200 swords believed to be from the period of World War II were discovered buried at an elementary school in western Tokyo, city officials said Monday. Grenades, bullets and cannonballs were also found one to two meters underneath the grounds of the Tanashi Elementary School in the city of Nishitokyo. The discovery of the cache of weapons came during excavation work that began in July linked to the construction of a building, the officials said. Cooperating with police and the Self-Defense Forces, the city on the outskirts of the capital removed the weapons from the school grounds, they said, adding they were possibly discarded after the end of the war in 1945." 1,400 guns, 1,200 swords found buried at Tokyo elementary school
Good point. Reports say the arms were found under the playground, but can't find any info on when the school was actually built.
I thought every Japanese school had a subterranean arms cache. I'll take three please, where do we "add them to cart"?
My first thought was that they meant artillery shells, but your suggestion seems more likely given the other items in the "cache" .