Create a terrifying area, dark like a desolate, green-smoking mountain range

Create a terrifying area, dark like a desolate, green-smoking mountain range, teeming with black dragons that will slay anyone who enters.. For the dragon's detail, it has red and black whiskers. the area is also foggy like on the cliffs and mountains and there is a river containing toxins flowing nearby . there are skeletal bones around the area, there is also fire spreading on the ground