SixtyGig_Light_64x_MC17.zip is a release file of the Minecraft resource pack SixtyGig Light Resource Pack (Build 1-14-2013), made for Minecraft 1.7.2. It was published on November 5, 2013 and is 10.2 MB in size. For the full description, screenshots and every other version, visit the SixtyGig Light Resource Pack (Build 1-14-2013) resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.