If you are looking for a new place to spend the afternoon hiking along a bluff overlooking areas south of Chattanooga near Lookout Mountain or enjoy the sights from the waterfalls nearby, check out Lula Lake Land Trust. The private park that a friend of mine manages is open to the public every other Saturday from 9-5. Check their web site for more details. If you have a handheld GPS unit, be on the lookout for some geocaching sites on the property.
Find it on WikiMapia.
Lula Lake (not the main falls), view north of Lookout Mountain, geocache site