| After two hours' rock hopping the forest starts to yield to scrub and eventually meadow as we emerge above the treeline. |
| As elevation increases, trees become stunted and above the treeline only shrubs, moss, lichen and herbs are found. |
| Of these, the most spectacular was Timberline, a long winding trail starting at the very top of the mountain, above the treeline. |
| Going above treeline requires special care, as conditions are harsher and more unpredictable. |
| From there, your party will don crampons and climbing helmets, strap skis to packs, and climb another 4.4 miles above treeline. |
| Trees near treeline produce annual rings that vary in width and density in response to changing environmental conditions. |
