Bedrock
minecraft:bedrockBedrock is an indestructible block that forms the bottom boundary of the Overworld and both the floor and ceiling layers of the Nether, as well as parts of End structures. It has an effectively infinite hardness and a blast resistance of 3,600,000, so it cannot be broken, moved by pistons, or destroyed by explosions in normal survival play. The item form is obtainable only through the Creative inventory, pick block, or commands.
FAQ
Can I obtain or break bedrock in Survival mode?
No. Bedrock has infinite hardness, drops nothing when destroyed, and cannot be obtained in survival. You can only get the item in Creative mode or via commands.
Where does bedrock generate?
It forms the bottom five layers of the Overworld, the top and bottom layers of the Nether, and appears on End spikes, the exit portal, and End gateways.
Can bedrock be moved by pistons?
No. Bedrock cannot be pushed or pulled by regular or sticky pistons.
Do mobs spawn on bedrock?
No. Mobs do not spawn on bedrock surfaces.