Northern lights
Coloured curtains of light in a high-latitude sky — a rare visible expression of forces you cannot ordinarily see.
The northern lights in a dream are the dream's image of a rare visible expression of forces ordinarily invisible. The aurora makes the magnetic field of the planet briefly something you can stand outside and watch. The dream brings the lights when something in your life — a creative breakthrough, an emotional truth, a spiritual encounter — has become temporarily visible at a scale you cannot usually look at directly. Northern lights stood under in silence are the dream affirming the right kind of witness. Northern lights photographed obsessively without ever being looked at with the eyes are the dream noting that the rare visibility was being processed for later instead of received now, and the witness was deferred into the camera.