So I was looking through the Flatirons in the Eldorado Springs Quad. There are a few closed-contours that are formations that appear in multiple guidebooks (at least both Roach and Rossiter) that may be worth adding. Here are just a few...
"The Fist" - 5.5 - Lat: 39.9809 Lon: -105.2946
"Ridge 3" - 5.3 - Lat: 39.9798 Lon: -105.2936
"Ridge 1 aka Heaven" - 5.3 - Lat: 39.9795 Lon: -105.2912
"Hillbilly Rock" - 5.2 - Lat: 39.9798 Lon: -105.2904
"The Hammerhead" - 5.0 - Lat: 39.9840 Lon: -105.2923
"Ridge 2 aka Satan's Slab" - 5.0 - Lat: 39.9794 Lon: -105.2925
"Backporch" - 5.6 - Lat: 39.9761 Lon: -105.2910
"Achean Pronouncement" - 5.8 - Lat: 39.9770 Lon: -105.2905
"The Dreadnaught" - 5.2 - Lat: 39.9757 Lon: -105.2919