It's hard to answer that question without knowing more about your property. However, I am placing a link that will show you the only three tracts of land that have sold in Belforest (at least on the MLS), as well as one that was listed but never sold. This may help you get an idea, but considering the lack of sales it's going to take a much closer look for any professional to get a good idea of potential market value. I have other resources that I can use to find sales that didn't go through the MLS, but I need to know the specific property.
If you'd like me to dig further and get a better estimate of fair market value for your property, please send me a personal note at email@example.com or call me at (251) 459-4764. I hope to hear from you!
Belforest Land Sales: http://www.navica2.net/displays/?n=234&i=7082136&k=7sYJ