[SunkenCiv]

Probably because the story is a total fabrication. Platinum is not found in very many places in quantity (common in some meteorites), and none of those places are in the Pacific, or anywhere near Micronesia.

[gundog]

Aw, now you’ve PROVEN it was aliens.

[Talisker]

Well the implication is that it came from a past, global, higher culture. That would also explain the megalithic basalt construction.