PILOT MOUNTAIN, N.C. (AP) — Authorities say a wildfire at Pilot Mountain State Park in North Carolina has grown to more than 1,000 acres — twice its size of a day earlier. News outlets report that officials said Tuesday that the blaze on Pilot Mountain is about 20% contained and is burning only inside the park. The park is northwest of Winston-Salem, North Carolina, and is known for its iconic knob that rises above the surrounding terrain. North Carolina Forestry Service officials say the fire started Saturday near a trail and was human-caused. Law enforcement officers are investigating to determine just how the blaze was begun. The park remains closed.