how to build a cobblestone generator in Minecraft.

First, you will need a water bucket and a lava bucket.

Dig out a four-block line.

Then, from the third block on the line,

dig one more block down.

Place the water bucket on the last block on the right,

then place the lava bucket on the far left block.

Once the lava and water get into contact,

it will create cobblestone.

You can break a block in front of the cobblestone

and stand there as you collect it using a pickax.

And now you have an infinite source of cobblestone.