although it is NOT what you're talking about, you reminded me of this article: https://www.theonion.com/geologists-we-may-be-slowly-running-out-of-rocks-181957

although it is NOT what you're talking about, you reminded me of this article: https://www.theonion.com/geologists-we-may-be-slowly-running-out-of-rocks-1819571484 https://www.theonion.com/geologists-we-may-be-slowly-running... Personally I think of those caves full of ancient crystals, or the stalag[mt]ites in newly unearthed caves. And the lost redwoods.