We have hundreds, if not thousands of these things in my neck of the woods. Around here, it is just a way for landowners to get long-term lease payments on ground that is non-arable and non-grazeable.
It's kind of like the CRP program where the taxpayers pay "farmers" of marginal cropland to not even attempt to grow anything.
You may be interested in this.
United States Farm Subsidy Search.
Just type in the zipcode to see results
http://farm.ewg.org/search.php?fips=00000®ionname=theUnitedStates