Drone footage from the National and Kapodistrian University of Athens shows the aftermath of flash floods that killed 20 people in two coastal towns west of Athens after a night of heavy rain.

In the industrial towns of Nea Peramos and Mandra, west of Athens, crumpled cars and mangled furniture are strewn across roads coated in the thick mud left behind by a raging torrent that washed through homes and businesses.

The Pappas Post has established a disaster relief fund for victims. Click here to donate.