North Central OregonA virtual tour of North Central Oregon and other scenic byways by Jason Buchanan
Laterally traversing the length of Oregon lies the Williamette National
Forest. Some of the largest expanses of pristine forest lies within its
borders. Day One of my trip consisted of the north central region of the
Forest, starting at Eugene, to Bend, to Sisters and then back to Eugene by
The South Sister volcano is of particular interest due to a bulge growing on the dormant volcano's flank. USGS geologist Dan Dzurisin states that The Bulge "is scientifically the most interesting target we have in the Cascades right now."
Since these photos were taken below, a rise of two inches has spread over a 10-mile diameter in the headwaters of Separation Creek. The area is about three miles west of the peak of South Sister, near a formation known as The Husband, and actually extends under Highway 242 as it climbs up to McKenzie Pass.
Plans are currently underway to install GPS monitors and seismometers, a new survey, and ground and air samples to check for volcanic gases.
At this point I had reached McKenzie Pass.
Images scanned by Advanced Digital Imaging.