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Sunday morning January 21 with gray sky, clouds and fog, from the Roc Llarg viewpoint in Sant Bartomeu del Grau, in the Osona region.
But what stands out is that, from the horizon between the clouds, the sun's rays filter through. They are twilight rays that illuminate the Plana de Vic, as we see in this snapshot in The Photos of the Readers of La Vanguardia.
The Roc Llarg viewpoint is an extraordinary location to capture panoramas like this one. The considerable altitude of the mountains that surround the town of Sant Bartomeu del Grau, around 900 meters, allows you to contemplate some splendid views of the Plana de Vic and the surrounding peaks (the Montseny, the Gilleries, the Collsacabra and the Puigsacalm) , from a large part of the eastern Pyrenees (Canigó, Puigmal, Pedraforca and Cadí) and Montserrat.
Crepuscular rays, in atmospheric optics, are rays of sunlight that appear to radiate from a single point in the sky. We see in these images how they are projected onto the city of Barcelona.
These rays flow through openings in clouds (especially stratocumulus) or between other objects. They are columns of sunlit air separated by dark regions of cloud shadow.
The name comes from its frequent appearances during twilight hours (sunrise and sunset), when the contrasts between light and darkness are the most obvious. Not in vain does crepuscular come from the Latin word crepusculum, which means "twilight."
