In the 1930's, while a fictional Indiana Jones was raiding Egyptian tombs and duking it out with Nazis for the Lost Ark of the Covenent (which is said to contain the pieces of the Ten Commandments brought forth by Moses), a real-life Japanese Indy Jones began digging up Iya's Mt. Tsurugi because he believed, through extensive research of comparing Japanese legends and texts with Biblical Scripture, that ancient Israelis crossed half the earth and hid the Lost Ark there. Though some of the links made are more compelling than others, the man, Masanori Takane, was a bit obsessed with his belief, and it must have taken a fair amount of effort for him conduct his nearly two decades of excavations on the mountain being that he started well before any road was built out to it.