The images in the resolution of 3200 × 2000 are within the system folders Mountain Lion. Here you can find a decent alternative to the default wallpaper in OS X and find interesting and original design for the desktop, which will bring joy and help you relax and unwind in a break during the day.
In order to set the secret wallpaper in OS X Mountain Lion, just follow these three simple steps.
Step 1 : Open the Finder, click the keyboard shortcut Command + Shift + G and copy the address field of the following line:
/ System / Library / Frameworks / ScreenSaver.Framework / Versions / A / Resources / Default Collections /
Step 2 : Copy the four folders: 1-“National Geographic”, 2-“Aerial”, 3-“Cosmos” and the 4-“Nature Patterns” - on the desktop or any convenient place.
Step 3 : Go to System Preferences -> Desktop & Screen Saver , and click on the "+" button to add the folder window on the left.
Examples of images hidden inside the "mountain lion":
National Geographic
Cosmos
Aerial
Nature Patterns