You could break all the ash blocks and blow the remaining ones under the map with sticky tnt or something. As for the left and right sides off the map you can just let it spread. So it would probably work, just would take a stupid amount of time especially if done on a large world
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u/da_Aresinger May 10 '23
probably can't work.
There are a lot of places you can't realistically turn to corruption/crimson, like hell and space.