Found this cool rock at lake Tahoe. It has 2 white rings around it that are so perfect I thought at first they were drawn. Now it lives in my Chia pet garden. Here's an additional pic.
this post was submitted on 30 Dec 2025
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Cool Rocks
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A place for:
- Sharing cool rocks you found
- Discussing cool rocks
- Memeing about rocks
- Cool rocks
- Minerals are cool, too
Be gneiss to each other.
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99% of the time it's fossils.
Yeah, but that looks more like a port on a plasma flux multiplexer that failed. You can tell by the rings. The coaxial field generator must have overheated, causing a loss of alignment. They probably didn't have access to a source of clean iridium and just tried to make do.
Cool rock go brrr
Not fossils. See my other comment, but the headline is these are cracks filled with something