The Marshall Mesa Trailhead, which is part of City of Boulder Open Space and Mountain Parks, remains closed due to the Marshall fire. Investigators are looking into whether the fire could have ...
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Underground coal fire burning near Boulder for 100 years is now outUnderneath the present-day Marshall Mesa trailhead lies one of 14,000 abandoned mines across Colorado. Mining activity ceased at the site in the early 1900’s, but the coal still left in the ...
Click to share on Facebook (Opens in new window) Click to share on Reddit (Opens in new window) Click to share on Twitter (Opens in new window) From right: Jeff Haley, Open Space and Mountain ...
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