This is a sidewalk grip where it ramps up from the street. I noticed that all of them have the same melt pattern. Low traffic area when no one was out.

Just curious if anyone knows why

    • Captain Aggravated
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      67 hours ago

      This is the kind of thing I felt the Fediverse was missing that Reddit had, the braintrust. The power behind r/whatisthisthing. The ability to say “Forensic paleo-opthalmalogists of Reddit…” and get five credible answers. Because a cross section of the entire human race was there. The Fediverse is populated mostly with a self-selecting group of mostly left leaning mostly FOSS enthusiasts so the variety in walks of life wasn’t here yet. This seems to be improving.