Darnells is a mile long cave that continues to increase in length as more and more leads are found. It was close to our house when I was living in Clarksville, so we used it as our "evening" cave, when we wanted to get some week night caving in.
The cave is only partially surveyed- this is about the first 1/3 of the cave, and is already a mile.
Sun shines down from an intermediate entrance.
Cavers near a large formation.
Caver enjoys a 20 foot tall column.
Surveying in the lower river passage, at the shower head.
The twin slabs of death.