Panorama of Fort Rock taken from within the ring
We had the opportunity to get away for the weekend, and decided to take some time to visit Fort Rock, a park near central Oregon.  The weather wasn't very good, but Fort Rock is quite impressive.  It is a tuff ring which is all that remains of an ancient volcano.  The photo above is a panorama--click on it to see it larger size and without the title.  You can also click on any photo below to see it in a larger size.  All photos were taken with an Olympus C-3000 digital camera.
Fort Rock is so unusual because it was a volcano that formed in a lake, the ancient Fort Rock lake.  The tuff ring used to be complete, but wave erosion from the prevailing southeast winds eroded a portion.  This view is from a USGS aerial photo.  If you look carefully, you can see successive shorelines as the lake dried up.  
Fort Rock Aerial Photo
Fort Rock from Southwest
  Approaching Fort Rock on Highway 5 from the west, Fort Rock appears as an impressive monolith.
Fort Rock is in a very lonely place in Oregon.  This photo shows some of the beautiful sagebrush country surrounding the monument.  
Surrounding Countryside
Clouds Close In
  The weather continued to close in as we approached, but fortunately, we weren't rained on.  This photo, also taken from the highway, shows the open side of Fort Rock.
We hiked a bit around the inside of the ring.  The cliffs are apparently home to quite a few birds, and we saw several rabbits nonchalantly nibbling on the plantlife.  
Within the Ring
Eroded shoreline on the edge of the tuff ring
  The old shoreline of Fort Rock Lake can be clearly seen on the cliff edges at the mouth opening.  It was hard to imagine what this place was like when the lake existed (~ 10,000 years ago).
Colorful groupings of lichen were to be found all over the place.  
Lichen on the rocks
Sunset from Highway 97
  A beautiful sunset on Highway 97 bid us a fond farewell to our brief trip.
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