Mining activity ceased at the site in the early 1900’s, but the coal still left in the ground has been burning ever since.

BOULDER COUNTY — Poofs of smoke and coal ash wafted from a 30-foot pit on Marshall Mesa as an excavator the size of a small house scooped dirt and coal out of the ground. The excavator broke ...

Boulder County fire crews plan a slash pile burn on Monday at Mud Lake near the Sherwood Gulch Trail north of Nederland, according to a press release. Fire crews will only conduct the burn if ...