Cascade Valley.zip is a release file of the Minecraft map Cascade Valley, made for Minecraft 1.12.2. It was published on February 19, 2019 and is 204.1 MB in size. For the full description, screenshots and every other version, visit the Cascade Valley map page.
How to install: Extract the .zip and move the world folder into .minecraft/saves; the map then appears in your Singleplayer list.