This video, titled ‘NEW WORLD TYPE IN MINECRAFT 1.7? EXTREME HEIGHTS! (Snapshot 13w36a)’, was uploaded by JustinsRealmMC on 2013-09-06 09:35:52. It has garnered 42 views and 2 likes. The duration of the video is 00:03:54 or 234 seconds.
Here is a new world type in 1.7 that makes HUGE mountains/skylands! Check out on the wiki for more information. Of coarse theres more stuff added on 1.7, But this is an awesome one.