A boulder problem is a sequence of climbing moves, usually of great technical difficulty, used to overcome a boulder or other rock feature. They’re the bouldering equivalent to a climbing route ...

The rock was a landmark and destination for those in the region throughout the 1800s, with locals climbing Rollstone Hill to picnic near the boulder, left there by a large glacier.

The rock was a landmark and destination for those in the region throughout the 1800s, with locals climbing Rollstone Hill to picnic near the boulder, left there by a large glacier.

Rock slide damage closes trail to popular Colorado attraction Boulder Falls 00:18. A rock slide has damaged a popular trail in Boulder Canyon.

A giant boulder, made of limestone and mistaken for a hill, in Tongatapu, the largest island of Tonga in the South Pacific. Scientists calculated that the boulder weighed more than 1,300 tons.

The rock was a landmark and destination for those in the region throughout the 1800s, with locals climbing Rollstone Hill to picnic near the boulder, left there by a large glacier.

The rock was a landmark and destination for those in the region throughout the 1800s, with locals climbing Rollstone Hill to picnic near the boulder, left there by a large glacier.

The rock was a landmark and destination for those in the region throughout the 1800s, with locals climbing Rollstone Hill to picnic near the boulder, left there by a large glacier.

The rock was a landmark and destination for those in the region throughout the 1800s, with locals climbing Rollstone Hill to picnic near the boulder, left there by a large glacier.