Intense sun, extremely arid conditions, high winds and winter exposure wear away at the exposed bark of a bristlecone pine, leaving striations along its exterior. A small amount of living bark is all that is necessary to sustain a mature bristlecone pine tree into extreme old age. Patriarch Grove, Ancient Bristlecone Pine Forest.
Species: Bristlecone pine
, Pinus longaeva
Location: White Mountains, Inyo National Forest
Image ID: 17488