The Geology and Petrography of Crater Lake National Park, 1902
LAVAS OF MOUNT MAZAMA.a
BALD CRATER BASALT FLOW.
Bald Crater has a well-defined pit on the summit of its cinder cone. Some solid flows of dark basalt (192, 193) are exposed, but red and black lapilli are most abundant. Its crater, being bare and prominent, affords a fine view, and when seen from neighboring points stands out conspicuously above the deep-green forests.