The next level of skyblock. This version is intended to be about 3x harder do to the fact that its gravel.
There are 4 islands, the desert island, the main island, the stone island, and the nether island.

There are challenges also:

Make a farm
Build a house
Make a mushroom island
Make a island capable of sustaining life (including hostiles)
Dont let your main island fall
Make 3 extra islands out of any material
Build a mansion