The trail building contractors use miniature excavators, jackhammers, explosive emulsion and hand tools to carve a trail out of the rocky hillsides of the Boulder Batholith.

A worker uses a mini excavator to cut a trail at Arapahoe Basin Ski Area in late July 2023. The new trail will connect Black Mountain Lodge to the summit, providing a more gentle grade for bikers ...

Building a wall by precisely stacking randomly shaped boulders could almost be the definition of hard work – both physically and mentally. It's the sort of thing we might want robots to do one ...

Clay Field Trail in Summers Corner is shutdown Monday after an excavator hit a gas line. March 3, 2025 (WCIV) ...