" Where the River Elbe flows through the Czech Republic, summer water levels have recently dropped so far that ‘hunger stones’ have been uncovered – carved boulders used for centuries to commemorate droughts and warn of their consequences. One of the hunger stones bears the inscription ‘Wenn du mich siehst, dann weine’: ‘If you see me, weep. "
― Robert Macfarlane , Underland: A Deep Time Journey