We visited the White Mountains last week and had a good time. The kids weren't too imprssed by the bristlecones, but they had a good time for the most part.
The bristlecone pine only lives in scattered, arid mountain regions of six western states of America, but the oldest are found in the Ancient Bristlecone Pine Forest in the White Mountains of California. There the pines exist in an exposed, windswept, harsh environment, free of competition from other plants and the ravages of insects and disease. The oldest bristlecones usually grow at elevations of 10,000 to 11,000 feet.
LINK: http://www.blueplanetbiomes.org/bristlecone_pine.htm