What are some uncommon things being used for coping on a ramp that you have seen/skated/heard of/dreamt of? Post pics if you have em and share your thoughts on how they skate.
Something i've never seen before but often dreamt of is skating a ramp that has some rectangular blocks of stone with natural edges used as the coping. I once laid stones like this as coping on a guy's pool and the whole time I was wondering if it was possible to skate. The natural edge would probably get eaten away super quickly and it might chip off easily too, depending on the type of stone used, but it could be cool for a short period. Sandstone is pretty affordable in my area and I get a lot of scrap from work of this kind of stone so I kinda wanna try it out on a little diy spot. The stone would look like this:

I've seen other stones used as pool coping, like a few of the grindline parks have tiny sections of river-rocks used as coping, but this just seems impossible to skate. I saw this at Mammoth Skatepark in California and I believe there is also a section of this at Eugene skatepark in oregon.