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In La Vanguardia Readers’ Photos we can see in this photograph in detail what a double arc of fog looks like.

We see the arch of fog that repeats itself inside, in a snapshot captured in Sentfores, in Vic, in the Osona region.

With the sun behind me and as the fog dissipated, this optical effect occurred that is like a rainbow, but white, as you can see in the image.

Sentfores or La Guixa is located in the Meder river valley and belongs to Vic. The church of Sant Martí is located at the western end of the municipal area. It was consecrated in 1150.

But, in the 18th century it was abandoned and another church was built in the Guixa suburb. Today we also find the ruins of the Sentfores castle.