Watching the horizon: twilight colors in a rocky cove, Sardinia, Italy

Watching the horizon in south western Sardinia, Italy. The harsh and serrated outlines of a rocky cove stand out against the polished and clear surface of the sea, during a vivid twilight.
In winter, finding heavenly coves to capture the beauty of sardinian sunsets is an amazing experience. Every stretch of coast hides a treasure, giving endless possibilities.
To capture this view, I’ve used an ultra wide angle lens with just one filter attached: a 2 stops gruaduated ND, aligned with the horizon, which darkened it and balanced the overall brightness of the scene. Differently to what it could seem, it was very dark: infact, the sun was set more than half an hour before. Therefore, there’s been no need to use a full ND filter to reach 30 seconds of exposure time.