Mystery Bulge in Oregon Landscape

A mysterious bulge on the surface of the earth that covers about 100 square miles seems to be growing.

The bulge is centered about 3 miles from the South Sister, 25 miles from Bend, Oregon, and is rising about 1.4 inches a year since about 1997. According to the likely cause is a pool of magma, and could signal a new volcano in the making. Read more about the Oregon Bulge.