Jump 'n' Nether 1.0 is a release file of the Minecraft map Jump 'n' Nether, made for Minecraft 1.8. It was published on April 13, 2017 and is 13 MB in size. For the full description, screenshots and every other version, visit the Jump 'n' Nether map page.
How to install: Extract the .zip and move the world folder into .minecraft/saves; the map then appears in your Singleplayer list.