CUSTER, S.D. (AP) — Lightning has touched off another wildfire in the Black Hills of western South Dakota.

The Great Plains Fire Information Service says the Grizzly Fire began in the Black Elk Wilderness on Wednesday. It covered about 1.5 acres, or less than a square mile.

Officials say the fire is in a remote, rugged area, and no structures are at risk. Crews on the ground and in an airplane have responded.

Copyright 2013 The Associated Press.