Oct. 20, 1991 -- ©R.A. JensenImage from The Deschutes & Ochoco National Forests Webpages... a gallery of geology-related imagery from the general area can be accessed here.
Many of the major features of Newberry Caldera are visible in this photo. Note Paulina Lake (left), Interlake Obsidian Flow (between lakes), Little Crater (center foreground), Central Pumice Cone (center background), Big Obsidian Flow (lower right), and East Lake (right).
KGW has picked up an excellent article from the Bend Bulletin on the installation of a set of seismic stations on Newberry Volcano, in order to monitor the area for indications of future eruptions. There's also a nice aerial photo of Lava Butte, which lies on the NW flank of the shield volcano, along route 97, a few miles south of Bend.
I really like the way the author, , describes the risk in this passage. It is indeed "a very high threat," but it's probably not immediate. This sort of monitoring project will, in the event of an event, most likely extend the warning ahead of an eruption. Just as satellite observation of the atmosphere allows us a few days warning for severe weather events, seismic monitoring can give us days or weeks notice to prepare for volcanic eruptions, rather than being taken by surprise.
Because of this, the USGS is planning to add eight seismic monitoring stations next summer on Newberry Volcano, which the agency classifies as a "very high threat."
But that doesn't mean new buttes or obsidian flows are going to pop up in Central Oregon next week, or even in the next century -- so people shouldn't sell their homes, Donnelly-Nolan said."The chances it's going to happen any time in our lifetime is very small," she said, but when the volcano does start to rumble, it could cause a lot of damage. "Imagine the disruption from just having a little lava flow across Highway 97," she said.
Here's the area in Google Maps, and here's a Flash Earth link.
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This area has a tremendous variety of volcanic and other landforms, and is a real delight for anyone with an interest in geology.