You will find world class climbing in this area as well as some of the finest scrambling spots in Red Rock. Tons of different trails (most aren't listed on BLM or RRNCA websites), I love to scramble, full body workout without the gym.
This area is best reached by the Calico Trail System parking lot near the entrance of Red Rock. At any given time, you'll probably see climber, hikers, bouldering and scrambling throughout this area. I also see professional photographers quite frequently whether it be for wedding photos, and what not.
Lots of Class 3 & 4 scrambling, different spots you'll have to squeeze like a cockroach to get through.
The views you can see from the Calico area can't be beat, panoramic views of the entire city.