A visit to the ancient bristlecone pine forest in California's White Mountains begins with a dramatic climb from the desert in Owens Valley at 4,000 feet elevation to the Schulman visitor center ...

FILE - Comet Tsuchinshan-ATLAS appears over the Eastern Sierra mountains as it transitions into the evening sky shortly after ...

Located at nearly 10,000 feet above sea level in the California highlands in the Inyo National Forest, the Ancient ...

The tallest bristlecone pine is but 60 feet tall, and most of its kind are much shorter. Clearly, bigger is not better in such a brutal environment as that found at high altitude in the White ...

Now the oldest known tree is another bristlecone pine in the White Mountains of California, named Methuselah. However, you can still find bristlecone pines in Nevada. Here's a look at the oldest ...

FILE - Comet Tsuchinshan-ATLAS appears over the Eastern Sierra mountains as it transitions into the evening sky shortly after sunset, as seen from the Ancient Bristlecone Pine Forest area ...