This video, titled ‘Minecraft Infinite Snapshot | The Infested Islands’, was uploaded by Nevmos on 2020-04-09 02:20:23. It has garnered 28 views and 1 likes. The duration of the video is 00:01:50 or 110 seconds.
While dimension hopping with the recent Infinite Snapshot for Minecraft I came across this “infested world.”
Unfortunately I cannot give you the keyword(s) used to get this world, as the book that made this world came from the infinite bookshelf.
Also, as for the resource pack that is enabled, it was the first pack a friend of mine made and wanted me to test for them.