Salvation Mountain is an art installation covering a hill north of Calipatria, California, near Slab City and just several miles from the Salton Sea. It is made from adobe, straw, and thousands of gallons of paint. It was created by local resident Leonard Knight, and encompasses numerous murals and areas painted with Christian sayings and Bible verses. The Folk Art Society of America declared it a "a folk art site worthy of preservation and protection" in the year 2000. In an address to the United States Congress on May 15, 2002, California Senator Barbara Boxer described it as "a unique and visionary sculpture...a national treasure...profoundly strange and beautifully accessible, and worthy of the international acclaim it receives."
In December 2011, Knight (at the age of 80) was placed in a long-term care facility in El Cajon for dementia. Concern has been raised for the future of the site, which requires constant maintenance due to the harsh surrounding environment. Many visitors bring paint to donate to the project, and a group of volunteers has been working to protect and maintain the site. 
- Knight is interviewed at length in the 2004 documentary Plagues & Pleasures on the Salton Sea. In this documentary he explains the inspiration for Salvation Mountain and the hopes he has for its role in a revival of the Salton Sea area.
- The site was featured in the 2007 film Into the Wild. The film was written and directed by Sean Penn based on a 1996 non-fiction book written by Jon Krakauer about Christopher McCandless' travels. McCandless met Leonard Knight in Salvation Mountain. Leonard Knight appears in a scene in the film as himself.
- Tony, Perry. "Salvation Mountain is missing its guiding spirit". Los Angeles Times. Retrieved 26 February 2012.[dead link]
- Larry Yust. "The Interactive Mountain of Leonard Knight", "Folk Art Society of America"
- Barbara Boxer. "Leonard Knight and Salvation Mountain", 107th Congress, 2nd Session Issue: Vol. 148, No. 62
- "The Future Of Salvation Mountain Uncertain". KPBS.org. Retrieved 2012-02-28.
- Honore, Marcel (August 12, 2012). "Who will save Salvation Mountain?". The Desert Sun (Palm Springs, CA).
- Honore, Marcel (November 12, 2012). "Return to Salvation Mountain". The Desert Sun (Palm Springs, CA).
|Wikimedia Commons has media related to Salvation Mountain.|
- Salvation Mountain – Official Website
- Salvation Mountain – History Website
-  - Slab-City Official Website updates on Leonard Knight and Salvation Mtn.
- Salvation Mountain, Inc. Board of Directors Site – at Facebook.com
- Video Tour of Salvation Mountain with Leonard Knight at Youtube.com
- Salvation Mountain on Google Maps
- Walkable virtual tour and treasure hunt on Snubble.com
- Extensive photo essay on Salvation Mountain: by National Geographic photographer Aaron Huey
- Portraits of Leonard Knight: by photographer Jace Rivers
- Cal Poly MA Thesis on Leonard Knight and his Salvation Mountain
- Howser, Huell (January 8, 1997). "Slab City (806)". California's Gold. Chapman University Huell Howser Archives.
- Howser, Huell (September 7, 2009). "Desert Adventures – California's Gold Special (142)". California's Gold. Chapman University Huell Howser Archive.
-  - UK band called Hurts Music Video filmed at Salvation Mountain (2013)