Season_Unending_3.5.zip is a release file of the Minecraft resource pack Season Unending [16x], made for Minecraft 1.4.2. It was published on January 8, 2013 and is 2.3 MB in size. For the full description, screenshots and every other version, visit the Season Unending [16x] resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.
