It could be a scene from a horror film, but it’s not. It’s Black Mountain (Kalkajaka), a foreboding sight that rises from ...

A massive rockslide in the Wet Mountains covered a southern Colorado highway with thousands of tons of boulders and debris on Sunday, closing roads and challenging state officials tasked with ...

If you're looking for a hike the whole family can enjoy, aim for the top of Flagstaff Mountain. Rising out of Boulder Mountain Park, Flagstaff Mountain sits about 5 miles southwest of the city.

These jaw-dropping rock walls flanking Green Mountain have become the symbol of the city, with many Boulder businesses sporting their image as a logo. Flatirons One through Five are the most ...