I knew a Moroccan who told me about a mountain they found in Saudi Arabia with a high percentage of gold embedded inside. Apparently western governments told them to be sparing with it, because releasing too much too soon could upset the world's gold markets. Then there are rumors of esoteric stashes of gold buried deep underground. Both these stories are just things I heard, I can't prove either of them.
Maybe he was talking about this mountain. We spoke about it back in 1998:
https://en.wikipedia.org/wiki/Mahd_adh_Dhahab
Physical gold is interesting enough, but crypto is linked to human creativity, which will eventually be the true store of value on Earth. Facebook is worth 330 billion USD. Eventually some of that will migrate to a more level playing field.