tree line

Above the tree line was raw heathland, exposed to the north.

On other occasions, Ford and Lisi met beyond the tree line behind his house.

The community members also erected a guard tower that extends just above the tree line, she said.

The sun had fallen beneath the black tree line, which fringed the northern shore of the Saskatchewan.

In Colorado alone the Arctic-Alpine territory above the tree-line probably extends over five million or more acres.

“There really is no such thing as the ‘tree line’ in the Andes,” explained the old explorer.

I had not been out many days on this trip when I was caught in a storm on the heights above tree-line.

The ptarmigan, with their home above tree-line, amid eternal snows, are wonderfully self-reliant and self-contained.