It is a high fenced plce but i think it is like 5000 or more acres inside the fence, email jan on his website for more information if you are interested. Was a great time, was my first time to ever go to a place like that and i was just filming and I had a blast, wonderful place.
Here is a link to pictures and all of the place that i took
http://woodsandwateroutdoorshow.com/elkhorn.htm