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Last July on the Continental Divide looking west into Idaho pre-sunrise, which means these light rays are anti-crepuscular — opposite of the sun. The convergence to a vanishing point is a visual illusion created by distance, same as looking down a railroad track where the lines seem to converge. Capturing them on a two-dimensional surface might spark some further pondering. Anyway, the anti version is almost always much dimmer than the counterpart but I’ve witnessed this a few times at high altitudes.
