A hotshot crew and two helicopters are working on trying to extinguish a fire burning in steep terrain above Highway 14 about five miles west of Bingen.  The Dog Falls Fire is on the west side of Dog Creek, and is believed to have burned about two-and-a-half acres.  Fire public information officer Bernie Pineda says the hot shot crew from Entiat is trying to determine the safest way to deal with the fire, while helicopters have been doing bucket work.  Pineda says there are no structures in danger, and the fire has not been growing.  The fire is burning on Columbia Gorge National Scenic Area land.  The Dog Mountain and Augspurger trails are temporarily closed due to the fire.