Comb Ridge is an 80 mile long wedge of Navajo Sandstone that was an historic barrier to travel during the pioneer era. In the Ancestral Pueblo era the eroded east side offered south facing alcoves that were used as foundations for building sites.
I was lucky to see other hikers below and made my way down to the right track. The trail in late August was somewhat overgrown with vegetation but was otherwise easy to follow. The Monarch ruins site is at the head of the canyon a little past the overhead large gash of an alcove.
There is also most of a large grinding stone on display along with some pottery shards and corn cobs. The large trash midden has a chain marking it off. There is a pool of water in front of the site, but it is hard to view.
The view from the ruins back down the canyon is lush with some large trees. I spent about 2:00 hours on this hike. The return without stopping took about 30 minutes. It was about 85 F degrees at mid day in late August and I carried 2 liters of water. It was a hot day but the distance is only about 1.5 miles round trip. There is shade from trees along the trail and comfortable places to sit in the alcove next to the ruins site.