I think it would was supposed to be able to remove permanent ones but I actually don't know if it currently does that. Has beena while since I made that one. Might need to check it in the future to see if it works like intended.
And one more thing... how do I get to the things behind the map? They keep daring me to search everything (which I've done many times), but I can't get there. https://ibb.co/LDsjWyk3
The wells themselves don't give any clues, no matter how much I search.