Denver South refers to climbing south of the big smoke, with the town of Castle Rock at its center. Castle Rock is a town of about 40,000 people and its approximately half way between Denver and Colorado Springs. For many people Castle Rock is an Outlet shopping center, but for climbers and boulderer's it is the town closes to Castlewood Canyon and Castlewood Ranch boulders.
At 6128 feet Castle Rock area can be cold in winter and warm during the summer. However, it is rare day when it is too cold to climb Castlewood Canyon as many of the rocks and boulders are in small gorges and forge sun traps, so as long as it is south facing it can be toasty on the coolest of winter days.
The epicenter of Denver South is Castle Rock which straddles I25 approximately half way between Denver and Colorado Springs on US I25. If you miss it your off to a bad start!