Precambrian metamorphic rock formed the core of the North American continent during the Precambrian eon 4.5–1 billion years ago. During the Paleozoic era, western North America was submerged beneath a shallow sea, with a seabed composed of limestone and dolomite deposits many kilometers thick.[54] Pikes Peak granite formed during the late Precambrian eon, continuing well into the Paleozoic era, when mass quantities of molten rock flowed, amalgamated, and formed the continents about 1 billion–300 million years ago. Concurrently, in the period from 500–300 million years ago, the region began to sink while lime and mud sediments were deposited in the vacated space. Eroded granite produced sand particles that formed strata—layers of sediment—in the sinking basin.[55]
The charming town of Boulder is surrounded by dramatic scenery, including the amazing Flatirons, acres of forest and snow-capped peaks – a perfect year-round playground. You can soak up the atmosphere on historic Pearl Street before hiking deep into Flatiron territory from the Open Space Mountain Park or meander through the town along Boulder Creek Path.
Buena Vista is an historic mining and railroad town that resoundingly lives up to its Spanish name meaning “good views” – you are surrounded by towering mountain peaks that provide a wonderful year-round playground for adventure seekers. The area boasts some of the best river rafting adventures in the country and you can also go hiking, biking, horseback riding, fishing and zip-lining.
