Lava Spawner

The infinite lava source was a block that would create infinite lava, which would replicate infinitely to fill up volumes.

Occurrence
Infinite Lava sources were first added to the player's Inventory on January 22, 2010. At this point they where called "volcano blocks". Originally they where provided in a stack of 5, later they could be found in chests in the Indev House in a stack of 99 or 100.

Usage
When placed, an Infinite Lava Source block creates 4 blocks of Lava at its sides which then spread infinitely like fluids in Minecraft Classic. Breaking the source block stops the spread. Infinite Lava Source drops itself when broken.

Data values
Their data value corresponds to Oak Stairs in later versions of Minecraft.