Geotourism Mapguide: A travel guide to the places most respected and recommended by locals.
  Fish and Wildlife Refuge or Sanctuary

Nickajack Cave Wildlife Refuge

 
Nickajack Cave
viewing platform
viewing platform
 
walk way to viewing platform
Maple View Recreation Area and Nickajack Reservoir
Maple View Recreation Area
 

Nickajack Cave formerly served as a refuge for Native Americans and a hideout for river pirates who preyed on travelers on the Tennessee River. During the Civil War, the cave was mined by both the Union and Confederate armies for saltpeter, an important ingredient used to make gunpowder. After the war, the entrance of the cave's cool interior was ideal for recreational use and was even equipped with a dance floor. 

Nickajack Cave was partially flooded in 1967 when Nickajack Dam was constructed by the Tennessee Valley Authority. Today, it provides sanctuary for endangered gray bats and is managed jointly by TVA and Tennessee Wildlife Resources Agency solely for their protection.

Biologically, Nickajack Cave is one of the most important caves in the Tennessee Valley, serving as a maternity roost for the gray bat. Pregnant females arrive in spring to give birth to a single pup.  Pockets in the cave ceiling trap warm air, which provides just the right temperature for developing baby bats.

Gray bats feed on insects over the reservoirs, consuming thousands of emerging adult aquatic insects, moths, and beetles each night. In one year, this colony may consume 274,000 pounds of insects. Cliff swallows, the birds you see emerging from the cave, feed on the same insects during the day. They build jug-like mud nests in the twilight zone on the ceiling of Nickajack Cave. The bats and birds share the same habitat and food source, but on different schedules.

Human disturbance is one of the most significant reasons for decline of this species. The Tennessee Valley Authority fenced Nickajack Cave in 1981 to protect the bats, and in 1992 Tennessee Wildlife Resources Agency designated Nickajack as Tennessee's first non-game wildlife refuge.

Why is the cave closed? TVA closed the cave to protect this significant colony of gray bats.  Recently, TVA has joined other agencies in supporting the closure of all caves on publicly managed lands in an effort to reduce the spread of white-nose syndrome, a devastating disease impacting cave-dwelling bats. White-nose syndrome, or WNS, is named for a white fungus that appears on the faces, ears, and wings of hibernating bats. Scientists are trying to determine the cause of WNS and its impact to bat populations. Once a colony is infected, WNS spreads rapidly and has killed at least 95 percent of bats at some sites in just two years. Other monitored bat colonies affected by WNS are experiencing similar levels of fatalities. This devastating disease has quickly spread from one cave in New York (2006) to caves throughout much of the eastern U. S. and Canada. There have been no reported human illnesses attributed to WNS and there is currently no evidence to suggest that WNS is harmful to humans or other organisms. Biologists are concerned that WNS could devastate populations of endangered Indiana and gray bats, and reduce numbers of common bat species to dangerously low population levels. Bats play a key role in keeping insects such as agricultural pests, mosquitoes, and forest pests under control. Between April and October, they usually eat their body weight in bugs per night.

“Bats provide a tremendous public service in terms of pest control. If we lose 500,000 bats, we’ll lose the benefits from that service and millions of pounds of insects will still be flying around our neighborhoods, agricultural fields and forests,” said Richard Kirk, Non-game and Endangered Species Coordinator for the Tennessee Wildlife Resources Agency.

"Temporarily staying out of caves and mines is the one thing we can do right now to slow the transmission of White Nose Syndrome. With cooperation and some luck, this will give us the time we need to develop an effective response strategy to slow the further spread of the WNS,” said Cory Holliday, Cave and Karst Manager for The Nature Conservancy.

Recreational Opportunities

One the largest draws to the area are the bats. Bats can be seen from a viewing platform each evening at Nickajack Cave between late April and early September. In the fall, they migrate to cooler caves to hibernate. Nickajack Cave is too warm to provide roosting habitat for gray bats during winter months.

To access the viewing platform, you can park at the Maple View Recreation Area and walk along the board walk and trail to the viewing platform. This is the only land access to the viewing platform.

The bats can also be viewed from the water. Boaters can paddle over to the cave from the put in at Maple View Recreation Area. Also within the Maple View Recreation Area, visitors may enjoy a swimming beach, picnic area, courtesy dock, pavillion, and boat ramp. Please note, the cave is gated to protect the bats within the cave and no caving or climbing is permitted.

Seasons Accessible

The restrooms are closed around first to mid November and reopen in spring. 

Fees: Maple View Recreation Area charges a $3.00 fee for parking to take care of the park.

How to Get There

Directions: I-24 Exit 161. Follow TN 156-W toward New Hope, approximately 5 miles to view cave across the water on the left.

For More Information, Contact:

Tennessee Valley Authority

tvainfo@tva.gov
www.tva.com

toll-free 1-800-882-5263
 

Leela Robinson wrote on September 05, 2012: We had a great visit in late August 2012 due to this informative article. Note there is no longer any fee collection facilities. The bathrooms are locked and hadn’t been open for awhile. We arrived, parked and walked out the wooden walkway to see the cave. There was some trash along the walkway, and trash spilling all around the can at the overlook. We walked back and launched our canoe. It was a Saturday, so there were people, but not many. There is a roped off section and some sand for a swimming area. I am not into swimming in that water though. It is just a short paddle to the cave. We extended it by paddling towards the waterway connecting with the main section of Nickajack Lake. We got up close to the cave to see the bats at dusk. At least 15 kayaks joined us, a Chattanooga group, that paddled across the water from another boat ramp location. A motorboat that anchored a bit farther out couldn’t see the bats because they weren’t close enough. After dark, it was easy to get back to the Maple View boat ramp (we had a light), but there was still enough light without it. There are bright streetlights that made it easy to load the canoe and tie it down. Would do it again!

Leela Robinson wrote on August 22, 2012: Thanks for such an informative article on the bat cave. There is not much information available online other than what you’ve written.

Laura wrote on November 28, 2011: The pictures are beautiful!

Boundaries and names shown do not necessarily reflect the map policy of the National Geographic Society.

Latitude: 35.718450000
Longitude: -84.259650000
Elevation: 874 FT (266 M)
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