The North Carolina mountains are home to a different species than here on the Piedmont, which is the same species as inhabits all of West Virginia, mountains or no. In the NC mountains, the light of the fireflies is whiter, and the individual lights are smaller, but they cluster more. They are drawn by the light of a campfire in the deep forest, hovering just outside the light of fire, late into the night.   Here on the Piedmont, and in my experience throughout West Virginia, be it in the mountains or in the hills and valleys of the Appalachian Plateau, the fireflies have a bright yellow light, do not tend to cluster, appear earlier, starting at dusk, slowly rise toward the trees, and have found their sweeties or given up for the night by the time it is full dark.

But pshaw on all of this. If you got 'em, go enjoy your summer night. Iffen you don't got 'em, then your land and environment must offer other magic. Go enjoy that.