The granite that composes most of the Wet Mountains solidified some 1.7+ billion years ago, in the Pre-Cambrian era (essentially, before any life began on Planet Earth). It's the same age as the granite in the Blanca Massif and Pikes Peak. While most of this mountain range is Pre-Cambrian granite, there are a couple areas of Cambrian metamorphic rock (north and east of Lake DeWeese) and the rock deposited at the top of Greenhorn Mountain is only about 25 million years old and solidified about the same time as the Spanish Peaks and the Silver Mountain-Mt. Mestas group. The mining areas around Querida and Rosita are in rock (a volcanic caldera) about the same age as the top of Greenhorn (Oligocene/Middle Tertiary period).

the Wet Mountains
In the Wet Mountains, just south of Bigelow Divide
typical view
A typical view
McKenzie Junction
Looking northeast at McKenzie Junction
on the eastern edge of the Wet Mountains
The east edge of the Wet Mountains, near Wetmore
Lake Isabel
Lake Isabel
The group of photos below was taken in early October as the aspens were coming into color.
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Blanca Peak  Blanca Peak  San Isabel National Forest  national forest  san isabel national forest
Forest view  forest  forest  national forest  sangre de cristo mountains
sangre de cristo's  wild turkeys  Wet Mountains  wet mountains