Check this out: http://www.smartretirementplans.com/retirement-investing/the-basics-of-raw-land-investments-602 . It talks about diversifying your portfolio with Raw land purchases. How these investments can help balance your portfolio.
“The purchase of raw land could help diversify the pension investing efforts. You may own stocks and bonds, offer a reliable savings account at a local bank or credit union, and perhaps also have a significant amount of dollars in an IRA or 401K plan, however, landowners before it can be developed and sold for-profit offers a little ‘portfolio diversification in your investment.”
Also make sure to check out IX properties for all raw land sales