Patch 4 is a release file of the Minecraft map 15 Ways To Enter That Base, made for Minecraft 1.9-Snapshot. It was published on February 6, 2016 and is 25 MB in size. For the full description, screenshots and every other version, visit the 15 Ways To Enter That Base map page.
How to install: Extract the .zip and move the world folder into .minecraft/saves; the map then appears in your Singleplayer list.
