Drought in Europe threatens important shipping on Rhine River - Troubles written in STONE

Previous droughts have uncovered so-called hunger stones in the Elbe river in the Czech Republic. The boulder in the northwestern town of Decin, north of the capital Prague, is roughly the size of a utility van and bears the foreboding inscription, "When you see me, weep".
The Rhine River fell to a new low on Friday, further restricting the supply of vital commodities to parts of inland Europe as the continent battles with its worst energy crisis in decades. The water a key spot is below 16 inches.

The Rhine is an important shipping route for raw materials such as grain, chemicals, minerals, coal and oil products including fuel oil.