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This is a stitched imaged made from two captures with the Rodenstock 70mm/5.6 HR-Digaron-W lens, Phase One IQ4-150 digital back (@ ISO 50), and a Cambo WRS 1250 camera, shifted left/right 15mm, producing a 230MP final image.

The full resolution (16152x14043) version is finally up on Flickr. There had been a bug preventing the upload of very large images there, which had forced me to use a large (but reduced size, 100MP) version as a placeholder there.

From 1958 through 1980, this incongruous four story (82 foot) monolith was the centerpiece of the "Almaden Air Force Station", a long-range radar site that was part of NORAD's SAGE early warning system. The blast-hardened concrete building served as the platform for an FPS-24 radar system, a massive 120 foot wide reflector that emitted a 5 megawatt VHF pulse, continuously rotating at 5 RPM.

Notoriously, the signal disrupted TV and radio reception throughout the San Jose area.

It's unclear if the SAGE system would have actually been effective in detecting incoming bombers, which presumably would have employed radar jammers. Fortunately, we never found out.

The antenna was removed shortly after the site's decommissioning in 1980, but the building, a prominent local landmark visible from downtown San Jose, has been preserved.

I have mixed feelings about these cold war relics. On the one hand, they're artifacts of what was perhaps humanity's most dangerous folly to date, locking the world in a deadly game where the stakes only went up with each round. This doesn't seem like something to commemorate or celebrate.

On the other hand, these objects, many now destroyed or decayed, serve as visible evidence of just how close to oblivion we are willing to go. And looked at from the right angle, they have stories to tell.

@mattblaze I lived through that era, telling younger friends about it now there is a disconnect as it is abstract. At least these relics make it real for them, maybe (hopefully) making some of my current paranoia and political “take” seem slightly more, well, justified.

@simplenomad It now seems hard to believe that for the first 50% of my life I lived with an entirely rational background fear that all of civilization might end at any moment with less than 30 minutes notice, possibly by accident.

I lack the vocabulary to describe it adequately.