As you no doubt noted by the headline, The Wild Update is coming to Minecraft on June 7.
The Wild Update will come with two new biomes: the deep dark and the mangrove swamp. The deep dark lies below the surface To get there, you will need to find the base of a cave and start digging. It is the only place where you will find sculk blocks.
One of the things you will notice about this biome is how silent it is – until you set off a shrieker. Triggering the creature will give you only four chances to get away from it. If you by chance make it shriek a fourth time and don’t get out of there quick enough, you will come face to face with the only mob that dwells in the deep dark.