Landscape Language
Erratics (noun) – Boulders that have traveled far from their source
Erratics are found throughout Mount Rainier National Park. In geology, boulders that are located far from their origin and differ from the surrounding rocks are called erratics. They are moved by the powerful forces that have shaped the mountain, including eruptions, debris flows, and glaciers. An easy place to view some erratics is along the Nisqually Vista Trail at Paradise, where several large boulders stand among the meadow plants. These erratics were carried down to Paradise by a lahar about 6,000 years ago.
NPS Photo of an erratic along the Nisqually Vista Trail, 8/3/21. ~kl







