What is the lowest block in Minecraft?

What is the lowest block in Minecraft? In Minecraft, altitude is often expressed as the bottom face of a block layer, where the lowest block that can be placed is at layer -64 and has a Y-coordinate of −64.

In Minecraft, altitude is often expressed as the bottom face of a block layer, where the lowest block that can be placed is at layer -64 and has a Y-coordinate of −64.