The freshness of cool water in the surface of the lakeThe freshness of cool water in the surface of the lake
A mountain river and the rays of the sun in a wild forestA mountain river and the rays of the sun in a wild forest
X-ray of the skull in blue tones on a black backgroundX-ray of the skull in blue tones on a black background
The flight of an owl in the night, illuminated by lightningThe flight of an owl in the night, illuminated by lightning