Or are they? They brought these trees over because they provided a good amount of shade.
View from our picnic lunch. Abstract of tall Lodgepole Pine Trees, Yellowstone National Park. There's many kinds of trees in the Park and I bet it sure looks pretty in the Fall and Winter.
Dead trees in the terraces of Mammoth Hot Springs, Yellowstone National Park grew during inactivity of the mineral-rich springs, and were killed when calcium carbonate carried by spring water clogged the vascular systems of the trees.