This resource about Mount Mazama, a volcano in the Cascade Range, covers its geographic setting, and geologic and eruptive history. The site also offers information about Crater Lake, a caldera that was created by the largest known eruption from any Cascade Range volcano. The 8 x 10 kilometer caldera lies in the remains of this Pleistocene stratovolcano cluster covering 400 square kilometers in the southern Oregon Cascades. Prior to its climactic eruption, its southern and southeastern flanks were deeply incised by glacial valleys that today form U-shaped notches in the caldera wall. Links labeled 'Special Items of Interest' include volcanic highlights and features, and points of interest. Other links lead to maps, graphics, images, publications, reports, and other items of interest involving this volcano and others.
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