October 2007

Near the Lower Geyser Basin in Yellowstone National Park is a stand of fire-scorched trees, or "fire trees" as our younger daughter named them during her first visit to the park five years ago. The ground surrounding a section of these trees is often steaming, hinting at the subterranean warmth…

We spent time checking out the travertine terraces at Mammoth Hot Springs, in the northwestern corner of Yellowstone National Park. Several thousand pounds of calcium carbonate, carried in solution from the hot springs that bubble up through thick limestone, are deposited onto the enormous terraces each day. As the terrace…