Trails of lightning backlight Chimney Rock in southwest Colorado's San Juan National Forest. Home to ancestors of the Pueblo Indians more than 1,000 years ago, the area around Chimney Rock has been a designated archaeological area and national historic site since 1970.
(Photo shot on assignment for, but not published in, "Life and Times of William Henry Jackson: Photographing the Frontier," February 1989, National Geographic magazine)
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In early morning mist that rolls in from the coast, two brown bears tussle like teenagers. "I was at this spot a year earlier and saw these bears doing the same thing," says John Paczkowski, a biologist with the Wildlife Conservation Society. "They sparred for about 40 minutes, taking breaks to eat a few berries." Bears in the Kronotsky reserve often encounter each other at salmon streams and seem to socialize more here than in some other food-rich areas.