Inside the first ring of fortifications you can see the walls of the second ring.
It's hard to realize just how far you can see in all four directions from this photo, but if you click on it to enlarge it, you can see that these rounded outcroppings are actually very tall rock formations rising from a deep valley below.
The red sandstone is covered with a soft green lichen.
This is the entry into the next level of fortifications, overlooking the valley. The wind was so strong, I was mildly terrified the whole time.