Land loans for investment property?

[L R Wadsworth]

What financing options would I have if I wanted to purchase land adjacent to my home without building improvements on it? I basically want to keep a natural area and add to the amount land I live on. This is agriculture property that has been untouched for 20+ years so there is no timber worth cutting or pastures to work to supplement our income at the moment. The area is 15+ acres up to 100 acres, my choice on the size. There is not a lot of good info to be found on raw land financing. I know cash is king on these types of purchases (I have some to put towards a loan), but what do people do to afford something like this?