Board Thread:Help Desk/@comment-4674838-20121203235625/@comment-5873794-20121224223922

The best way to contain the Corruption/Hallow is to use snow blocks, or make your home in a snow biome. The Corruption/Hallow is unable to spread through snow. In order to completely stop the corruption from spreading closer to your home, you can create a 3 block thick wall going straight from the surface all the way down to the underworld. In order to actually obtain snow blocks, you can keep creating new world (Any size will do) and scan the surface for a snow biome, then just start digging. During the December 15-25th period, any new world will have a snow biome. Buring other time periods, there is a 33% chance of a snow biome being generated.