this post was submitted on 16 Jan 2024
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Bay Area folks, what are these markers? I see them around in random places. (lemmy.world)
submitted 11 months ago* (last edited 11 months ago) by Ghostalmedia to c/bayarea
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What are they used for?

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[–] gibmiser 43 points 11 months ago (2 children)

https://oaklandgeology.com/2018/12/24/the-seven-stations-of-the-hayward-fault/

[–] [email protected] 13 points 11 months ago

That was even more interesting than expected.

[–] Ghostalmedia 6 points 11 months ago

Thanks!

[–] [email protected] 3 points 11 months ago

They are all over the place if you look for survey markers. There are large ones too for aerial or satellite photos. It's cool how they blend in.