Your land is located somewhere that I would not personally want to own land (I am personally more attracted to a more urban lifestyle, rather than living in a rural area), so I would not personally be interested in your property.

It doesn't look like Zillow is able to provide any kind of estimated value of your property. I might suggest posting either the assessed value (by the taxing authority), comparable sales in the area, or some other information that would help a potential buyer value your property.