But unlike the permafrost in real life, the permafrost in this mod has special powers that can turn the stone around it into Iced Stone, which can protect the permafrost. It will also freeze any water nearby, even if it is not a source block. Permafrost will spawn naturally in caves. Shovel or empty hands are needed. It does not have to be in a specific biome where there is snow, but rather found fairly deep underground. If the permafrost is exposed to heavy torch light or sunlight it will quickly melt into dirt, rendering it useless.
The main use for this item is the chance that you can get frozen meat, which is used for extracting mammal dna.
When broken the block can give: