It was parked directly over the freeway above the trees at the top of a mountain pass. We went directly below it.
In the fall of 2010, two roommates were heading south on the I-5 in southern Oregon, a few miles before Grants Pass, on their way to visit the driver's parents. It was just after dusk, and the road was climbing a steep grade toward the top of Sexton Mountain Pass.
Near the crest, the driver noticed two brilliant white lights hanging above the hill. As the car climbed, a third came into view, then a fourth light in the middle, amber-coloured and blinking slowly. The three white lights made a triangle. It wasn't moving at all, and it looked enormous.
They talked it over for a few minutes as they got closer and agreed it wasn't any kind of plane. Then the highway took them right underneath it. Through the pines along the roadside they could see two of the corner lights at once, which gives you a sense of the size. The roommate stuck his head out the window, looked straight up, and could just make out the outline: a dark triangle with the lights at its corners. Judging by how long it took to drive under it, the driver guesses it was about as wide as a football field. It made no sound.
Looking back, the driver has noticed something else. Those corner lights were blinding, and the amber one was right overhead, but neither one seemed to light up the road or the trees around them. Lights that bright should have lit up the whole hillside.
Over the crest, the roommate said it seemed to drift back the way they'd come, and the hill soon blocked it from view. There was nowhere to turn around for miles, so they kept going. The driver filed a report with a UFO group within a couple of days.
That might have been the end of it, except that more than a decade later the two of them got back in touch and compared notes. The driver remembers pulling over, rolling the windows down to listen, then carrying on and watching it shrink in the rear-view mirror. The roommate remembers it completely differently: they stopped the truck right under it and got out to dig the camera out of the back, and when they looked up, it was gone. Neither had been drinking. The driver had to dig up that old report to check, and it matches the driver's version.
The driver also remembers that when they got to the parents' house about an hour later and excitedly told the story, the parents, usually night owls, seemed oddly tired and went to bed early. Our witness isn't ready to read anything into that, and would rather assume one of them simply remembers it wrong. But it's been nagging at them ever since.