GATLINBURG, Tenn. (AP) - The Great Smoky Mountains National Park is issuing parking passes for those wanting to see the synchronous fireflies this summer.

Parking passes cost $1.50 and will be available online at www.recreation.gov beginning at 10 a.m. on Wednesday. The passes allow visitors to park at the Sugarlands Visitor Center where they will be taken by shuttle to the viewing area.

The firefly viewing will take place from June 4 through June 11. The shuttle service will be the only way for visitors to get to the Elkmont area to see the fireflies during this period.

The parking passes are non-refundable, non-transferable and good only for the date issued. There is a limit of one pass per household per season.