Robert Clarkのインスタグラム(robertclarkphoto) - 1月25日 22時47分

One more of the Human remains that I photographed at #Herculanum, a city near #Vesuvius that was destroyed by was an ancient Roman town destroyed by volcanic pyroclastic flows in 79 AD. Its ruins are located in the commune of Ercolano, Campania, Italy.
A pyroclastic flow (also known scientifically as a pyroclastic density current is a fast-moving current of hot gas and rock (collectively known as tephra), which reaches speeds moving away from a volcano of up to 700 km/h (450 mph). The gas can reach temperatures of about 1,000 °C (1,830 °F). Pyroclastic flows normally hug the ground and travel downhill, or spread laterally under gravity. Their speed depends upon the density of the current, the volcanic output rate, and the gradient of the slope. They are a common and devastating result of certain explosive volcanic eruptions. @Robert Clark @thephotosociety @instituteartist @ナショナルジオグラフィック

[BIHAKUEN]UVシールド(UVShield)

>> 飲む日焼け止め！「UVシールド」を購入する