<p>At least 15 people were killed in the Athens area on Wednesday, November 15, after flash flooding overturned cars and left highways impassable, according to Kathemerini</a>.</p><p>The Athens suburb of Mandra was one of the areas worst affected. It and surrounding neighborhoods can be seen in this drone footage from November 15. Credit: UP DRONES via Storyful</p><br />
