1989 Map of Opal Creek

About this map

Mirror Plateau dominates the southern half of this landscape, its high, undulating surface drained by a series of descriptive waterways including Opal Creek, Deep Creek, and Wrong Creek. Located within the northeastern reaches of Yellowstone National Park, the area is defined by its hydrothermal and geological character. The Lamar River winds through the northern valley, joined by Soda Butte Creek and Cache Creek. The map documents early-managed wilderness access, noting several Campsite locations and Campsites along with a Pack Trail network for back-country travel. A specialized Thermal Area is identified near the river, while the presence of the Fossil Forest and Chalcedony Creek highlights the unique mineral and paleontological heritage of the region. Most human infrastructure, including the Entrance Road, Picnic Area, and Footbridge, is concentrated along the northern corridor near the park boundary.