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In my made up world, I have an onyx coloured river but I am not sure if it would work. Edit* I want to have black water where the river used to be an old lava bed so the lava rock at the bottom ...
Question
geology
In my made up world, I have an onyx coloured river but I am not sure if it would work. Edit* I want to have black water where the river used to be an old lava bed so the lava rock at the bottom ...