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>I would expect every edge on every rock in such tubes to be sharp Why? The rock has been melted away, if anything things should be quite smooth in the tubes.
by tokai 5y ago
>I would expect every edge on every rock in such tubes to be sharp
Why? The rock has been melted away, if anything things should be quite smooth in the tubes.
- andrewflnr 5y agoHaving walked in a couple lava tubes, "smooth" is not really the word I would use, but I suppose neither is "sharp". (Among other things, imagine popcorn ceiling texture, on the floor, made of rock)