Ark Of The Covenant Cache

This is the Ark Of The Covenant Cache, no, that is not the name of it but I'm not trying to highlight which cache this actually is, some of you will probably recognize it right away, I believe Harrison Ford might have something to do with it. Also, I'm only including one picture, have to leave some of the surprises

.Yes I'am a big cache in a cave and you must find me, not as easy as you'd think. And no I'm not really gold.