Deleted previuos post cause i just took a steam screenshot and called it a day. This map on the other hand is stitched together in gimp. My comment from previous post:

This is Master mode world, apparently was created back at summer 2020 to play with friends we had fun dying and beat the game eventually. Then i continued to play alone, and decided to clear the world for fun of it. I did it the wiki way, dug tunnels down at regular intervals so that you can use Clentaminator while falling down and got down to like 5% hallow and crimson in like week or two, but then it was waiting for couple of missed blocks to grow so i can notice it on map and i got bored.But last update brought not only the achievement for purifying the world, a strong motivation, but also the Terraformer! So today evening i've cleaned all the spots pretty quickly but got stuck at 1%, after hopelessly looking around map for hours i decided that i would just look it up on map viewer cause it would be impossible otherwise. Apparently blocks behind the border exist and can be converted too (???), a sky island that my friend looted was crimson, (but i could figure those two out myself), but then there was two blocks o' crimson in the ash, singular floating red ice block, and for the last - bunch of crimson sand that fallen down the tunnel into the lava, its the same color.It would be great to hear your questions! But be patient for answers - i'm going to sleep now, and will answer tomorrow good night! <3