nationalgeographicdaily:

Lago di Olginate, Italy

Photograph by Stefano Anghileri

A layer of low clouds covers the alpine valleys of northern Italy, just south of Lake Como.  The clouds are just dense enough to hide uniformly the valley and also filter the artificial lights below like they were an opaque blanket.  Above the layer, moonlight and high cirrus clouds make the night less dark.  You can easily recognize the round shape of Lago di Olginate and the lights of the villages all around its banks.