Was looking at Sauron's Road, that goes from Barad-dûr to Sammath Naur

was looking at Sauron's Road, that goes from Barad-dûr to Sammath Naur, the Fire Chambers. coming out of the huge western gate of the dark tower, the road passed over a deep chasm via a wide iron bridge and then, entering the plain, continued for about a league between two smoking crevices, and thus reached a long sloping walkway that led up the eastern slope of the Mountain. after, making a curve and going around the entire circumference from south to north, she finally went up,