Three Sisters, Oregon

I've worked on both ends of the Three Sisters in Oregon over the course of my graduate work and postdoctoral research. On the north end, I was a field assistant for Mariek Schmidt when she was working on her Ph.D. fieldwork at North Sister and the allied basaltic volcanoes that surrounding the oldest of the Three Sisters. I've also done some fieldwork on the southern end of the Three Sisters, looking at Rock Mesa and the Devil's Hills, the youngest rhyolite domes of the complex. This image shows those flat, grey domes in contrast to the green surroundings at the bottom of the issue, while the basaltic lava from places like Collier Cone and Three-in-One cone (the Matthieu Lake Fissure) can be seen in black near the top of the image.

Fondest memory: Donkey on the loose!

Image: Landsat image from September 9, 2011. USGS/NASA.