The Huntsville Land Trust is a non-profit organization dedicated to preserving nature within Madison County. The Trust acquires land by buying it or encouraging donations from property owners. Monte Sano is their biggest project; over the last ten years they’ve acquired the majority of the land on the west face of the mountain.
The Land Trust performs a valuable service; you need only look at the houses built on nearby Round Top Mountain to get an idea how the slopes around Huntsville might look without their work. The Trust needs members, by the way. You can reach them through the Land Trust Web Page.