1. We broke through the tree line from the north.

2. I could see the muzzle flashes in the tree line fifty yards away, which blocked our take-off path.

3. They were making towards the tree line, which was like every other tree line.

4. We were walking parallel with a tree line and started taking fire.

5. The pathfinder, hidden in the tree line somewhere, told us everybody was loaded and to take off to the left.

6. Adam landed in the clearing between the tree line and the wall.

7. Above the tree line there is a zone that is generally called alpine tundra.

8. They crash through the tree line and suddenly stop in their tracks.

9. "You see the river is a tree line, and all this is basically fresh-water marsh, " said Blaize.

10. Soon we were walking above the tree line and we came to a waterfall fed by snow melt.

10.

11. In thin forest just south of the tree line, a Nenets herder leads his reindeer across snow-covered pastures where lichens serve as winter fodder.

12. A treeless area between the icecap and the tree line of Arctic regions, having a permanently frozen subsoil and supporting low-growing vegetation such as lichens, mosses, and stunted shrubs.

13. The summer range lay above the tree line on Forest Service land on Brokeback Mountain.

14. In order to decipher phenomenon of tree line changing with climate variety, the trend of tree line on the northern slope of Changbai Mountain was studied.

15. Dark green native forest extends from the mountain tree line to the shore.

16. Leaving Okawi and Beruna, Miles turned away from the village and padded silently across the beach to the tree line.

17. I went back along with him to check the path was the tree line route to the falls.

18. It was so dark he could barely make out the tree line on the distant shore.

19. After a thirty-second pause to let us load up, Shaker took off over the forward tree line.

20. The changing climate forced the Inuit to work their way south, forcing them into marginal niches along the edges of the tree line.

21. One third of Franconia Ridge in New Hampshire is above the tree line.

22. "Basically, what you watch for is — at the edge of the tree line, you watch for movement," Marcy says.

23. In Canada and Greenland, the Inuit circulated almost exclusively north of the "Arctic tree line", the de facto southern border of Inuit society.

24. I was approximately half way down the road, where the park and ride is located, when I saw a huge aircraft about 200 ft in length emerge out of the clouds about 100 ft over the tree line.

25. One day, as the herd funneled through a gully at the tree line, Karsten and Leanne spotted a wolf creeping up. The herd responded with a classic swarm defense.

26. And then, on turning a corner, we found ourselves clearly above the tree line and there, undeniably, it was: Mount Fuji, or Fuji-san as it is reverentially termed in Japan.

27. There is clearly an issue with the boundary to the right and the group of trees planted outside the natural tree line were obviously designed to deter the golfers from flying right from the tee.

28. This rapid zone of transition is called the upper timberline or tree line.

29. This is especially true for trails constructed below the tree line, where large patches of forest must be clear-cut to make way for skiers.