The Mid City Published May 23, 2015 at 1280 × 960 in Sport Climbing at the City of Rocks ← Previous Next → The mid-city of the City of Rocks Most rock climbing areas spend large amounts of forest and have smaller regions within the main area. This is the “mid-city” and contains popular sub areas known as the Transformer Corridor, Flaming Rocks, and Slabbage Patch, among others.