Alan Lester always seems to have a spring in his step and an enthusiastic curiosity that belies his 49 years. I usually run into him at the climbing gym, but he’s just as often found teaching… ...

He was a volunteer with Rocky Mountain National Park, the city of Boulder parks and recreation divisions, and other groups, where he trained naturalists, led field trips, provided geologic counsel, ...

Longs Peak, at 14,259 ft, pokes well above much of the landscape in Rocky Mountain National Park just to the NW of Boulder, here seen in an aerial photo looking directly west. ... Geological Sciences.

A lone jogger moves across a bridge over the lake in Harlow Platts Community Park with the Flatirons in the background Thursday, March 25, 2021, in Boulder, Colo. (AP Photo/David Zalubowski) ...

Yes, it is geology that shapes our cherished playgrounds. Take, for example, the limestone mosaic called Shelf Road near Cañon City, or Eldorado Canyon near Boulder, or Rifle Mountain Park on the ...