death_valley_0.0.1.zip is an alpha file of the Minecraft map Death Valley Map [survival] [1.6.4], made for Minecraft 1.4.7. It was published on March 8, 2013 and is 0.2 MB in size. Pre-release builds can contain bugs — back up your world before installing. For the full description, screenshots and every other version, visit the Death Valley Map [survival] [1.6.4] map page.
How to install: Extract the .zip and move the world folder into .minecraft/saves; the map then appears in your Singleplayer list.