Geological structures

In Central Oregon you are at the mercy of winter’s weather whims.

Sun-filled days are broken up with snowfall which makes road trips unpleasant. Right now we are in the middle of a February snow-dump and have spent the last week close to home. When the roads, as well as the sky cleared, we were ready for an excursion.

East of La Pine, about 40 miles on the Fremont Highway (State Route 31), is according to our trusty Oregon Roadside Geology book,  a “garden of volcanic oddities.” Big Hole, Hole-in-the-Ground, The Devils Garden and Fort Rock were all formed about 13 thousand years ago in and along an ice-age lake that became Silver and Summer lakes. Basically, at the same time Mt Mazama was making Crater Lake.

Geological spectacles are usually enough to pique our interest, but just a few weeks ago we discovered that Fort Rock State Park was also a destination for birders.  In particular, you’ll find falcons and eagles using the unique structures of Fort Rock to launch hunting missions across the prairie and farm fields to the east.

 

The state park at it’s northwestern edge is the starting point for a series of trails that take you into the ring of volcanic ash and around it’s outer perimeter.

This scouting mission didn’t align with optimal birding times, but we saw a couple of bald eagles and a few falcons soaring in and around the rock faces.

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