| 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. |
| Trees near treeline produce annual rings that vary in width and density in response to changing environmental conditions. |
| From there, your party will don crampons and climbing helmets, strap skis to packs, and climb another 4.4 miles above treeline. |
| Inuit near the treeline, for example, could access pine, the inner bark of which is rich in acetylsalicylic acid. |
| To really appreciate the area, hike above the treeline on a mountain slope where you can see sagebrush and several other alpine flowers. |
