In the words of the porter of this map:
“The Nether 2:
From the creators of simple parkour….
Comes The Nether 2
Note that the map is not 100% ported and I am in need of help to fill the whole map with nether brick so I can spawn Zombie pigmen everywhere. I will post your name as one of the creators of the map, and the whole map is filled with caves.”
You can download this map here (http://db.tt/DwxMV8fs) in order to help them finish the job!