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A large, slow-growing volcanic bulge in Eastern Oregon is attracting the attention of seismologists who say that the rising ground could be the beginnings of a volcano or simply magma shifting underground. Scientists said that the 100 square-mile bulge, first discovered by satellite, poses no immediate threat to nearby residents. Michael Lisowski, geophysicist at the United States Geological Survey's Cascades Volcano Observatory in Vancouver, Washington. The bulge is rising at a rate of about 1.4 inches per year, according to a report issued by the U.S. Geological Survey. 25 miles west of Bend, Oregon. Lisowski said the unnamed bulge was...

BEND, Ore. (AP) -- A recent survey of a bulge that covers about 100 square miles near the South Sister indicates the area is still growing, suggesting it could be another volcano in the making or a major shift of molten rock under the center of the Cascade Range. Recent eruptions at nearby Mount St. Helens in Washington state have rekindled interest in the annual Sisters survey and its findings. Oregon has four of the 18 most active volcanoes in the nation -- Mount Hood, Crater Lake, Newberry and South Sister. A recent U.S. Geological Survey report said monitoring is...