The annual appearance of the synchronous firefly beetles in the Park has become so popular that Park officials began managing the number of visitors to the trailhead. This area has very limited parking spaces that were designed to accommodate day use for several trails. The dates that the mating behavior begins can vary each year due to weather and other natural factors, but generally starts around the second week in June and lasts for about two weeks.

The Elkmont area is an old logging town with remnant structures of a pre-park resort community and there is a 220-site campground and several trails that lead into the backcountry. A popular viewing spot for the fireflies is located along the Little River Trail which is surrounded by forest and the Little River. "The public who visit this area for the purpose of watching fireflies in the dark should recognize this is a natural environment with no other restrooms or other facilities and that the fireflies flashing synchrony becomes more apparent later in the night," said Park Superintendent Dale Ditmanson. "So for those catching the early trolleys, there will be several hours before the fireflies come out," he explained.

In order to provide a safe and enjoyable experience, the following procedures will be in effect during the firefly managed viewing period June 8-16 in the Elkmont area:

Trolley service will be provided from the Sugarlands Visitor Center bus/RV parking area on a first-come, first-served basis starting at 6 p.m. The last trolley to pick up visitors from the visitor center will be 9 p.m. or when the parking area is full. After 9 p.m., trolleys will only be taking visitors back from the Little River Trailhead to the visitor center. The last trolley to return to the visitor center will be at 11 p.m. each night.

It is recommended visitors bring flashlights with red cellophane covers to reduce white light. Coolers and alcoholic beverages are prohibited. Visitors can bring lawn chairs, and carry food and water in backpacks which can fit on their laps in the trolleys; there are no services available. Dogs/pets are not allowed on the trolleys or on the trail.

"No Parking" at the Little River Trailhead will be enforced The Little River Trailhead parking area will be used to serve as a turn-around area for the trolleys. Starting at 5:30 p.m., the public will not be allowed to access the Elkmont Entrance Road, except for those camping at the Elkmont Campground. Park Rangers will be stationed at the intersection of Little River Road and the Elkmont Entrance Road to manage this restriction.