"hunger stones" appearing

                                                     
 It has a slightly apocryphal feel to it and yet it's too good to pass up:

DECIN, Czech Republic (AP) — Due to this summer’s drought in Central Europe, boulders known as “hunger stones” are reappearing in the Elbe River....

The oldest water mark visible dates to 1616. That stone, is considered the oldest hydrological landmark in Central Europe, bears a chiseled inscription in German that says: “When you see me, cry.”