A sinkhole is seen on the shore of the Dead Sea, Israel July 27, 2015. The Dead Sea is shrinking, and as its waters vanish at a rate of more than one meter a year, hundreds of sinkholes, some the size of a basketball court, some two storeys deep, are devouring land where the shoreline once stood. Picture taken July 27, 2015. REUTERS/Amir Cohen 

Pipes that pump water cross through evaporation pools, which today make up the southern part of the Dead Sea, Israel July 27, 2015. The Dead Sea is shrinking, and as its waters vanish at a rate of more than one meter a year, hundreds of sinkholes, some the size of a basketball court, some two storeys deep, are devouring land where the shoreline once stood.Picture taken July 27, 2015. REUTERS/Amir Cohen 

A sign warning of sinkholes is seen at the entrance to an abandoned tourist resort on the shore of the Dead Sea, Israel July 27, 2015. The Dead Sea is shrinking, and as its waters vanish at a rate of more than one meter a year, hundreds of sinkholes, some the size of a basketball court, some two storeys deep, are devouring land where the shoreline once stood. Picture taken July 27, 2015. REUTERS/Amir Cohen 

A canal leading to the Dead Sea is seen in Israel July 27, 2015. The Dead Sea is shrinking, and as its waters vanish at a rate of more than one meter a year, hundreds of sinkholes, some the size of a basketball court, some two storeys deep, are devouring land where the shoreline once stood. Picture taken July 27, 2015. REUTERS/Amir Cohen TPX IMAGES OF THE DAY

Palm trees that collapsed into a sinkhole are seen at an abandoned tourist resort on the shore of the Dead Sea, Israel July 28, 2015. The Dead Sea is shrinking, and as its waters vanish at a rate of more than one meter a year, hundreds of sinkholes, some the size of a basketball court, some two storeys deep, are devouring land where the shoreline once stood. Picture taken July 28, 2015. REUTERS/Amir Cohen 

A sinkhole is seen on the shore of the Dead Sea near Kibbutz Ein Gedi, Israel July 27, 2015. The Dead Sea is shrinking, and as its waters vanish at a rate of more than one meter a year, hundreds of sinkholes, some the size of a basketball court, some two storeys deep, are devouring land where the shoreline once stood. Picture taken July 27, 2015. REUTERS/Amir Cohen 

A sign warning of sinkholes is seen on a fence surrounding an abandoned holiday resort on the shore of the Dead Sea near Kibbutz Ein Gedi, Israel July 27, 2015. The Dead Sea is shrinking, and as its waters vanish at a rate of more than one meter a year, hundreds of sinkholes, some the size of a basketball court, some two storeys deep, are devouring land where the shoreline once stood. Picture taken July 27, 2015. REUTERS/Amir Cohen 

Sinkholes filled with water are seen on the shore of the Dead Sea, Israel July 27, 2015. The Dead Sea is shrinking, and as its waters vanish at a rate of more than one meter a year, hundreds of sinkholes, some the size of a basketball court, some two storeys deep, are devouring land where the shoreline once stood. Picture taken July 27, 2015. REUTERS/Amir Cohen 

A utility pole stands in the Dead Sea, Israel July 27, 2015. The Dead Sea is shrinking, and as its waters vanish at a rate of more than one meter a year, hundreds of sinkholes, some the size of a basketball court, some two storeys deep, are devouring land where the shoreline once stood. Picture taken July 27, 2015. REUTERS/Amir Cohen 

Sinkholes are seen on the shore of the Dead Sea, Israel July 27, 2015. The Dead Sea is shrinking, and as its waters vanish at a rate of more than one meter a year, hundreds of sinkholes, some the size of a basketball court, some two storeys deep, are devouring land where the shoreline once stood. Picture taken July 27, 2015. REUTERS/Amir Cohen 

A structure that collapsed into a sinkhole is seen at an abandoned tourist resort on the shore of the Dead Sea, Israel July 28, 2015. The Dead Sea is shrinking, and as its waters vanish at a rate of more than one meter a year, hundreds of sinkholes, some the size of a basketball court, some two storeys deep, are devouring land where the shoreline once stood. Picture taken July 28, 2015. REUTERS/Amir Cohen 

A sign indicating an elevation of 404 meters (1,325 ft.) below sea level is seen near an abandoned resort on the shore of the Dead Sea, Israel July 28, 2015. The Dead Sea is shrinking, and as its waters vanish at a rate of more than one meter a year, hundreds of sinkholes, some the size of a basketball court, some two storeys deep, are devouring land where the shoreline once stood. Picture taken July 28, 2015. REUTERS/Amir Cohen 

A sinkhole is seen on the shore of the Dead Sea, Israel July 27, 2015. The Dead Sea is shrinking, and as its waters vanish at a rate of more than one meter a year, hundreds of sinkholes, some the size of a basketball court, some two storeys deep, are devouring land where the shoreline once stood. Picture taken July 27, 2015. REUTERS/Amir Cohen 

Dry palm trees stand near a sinkhole on the shore of the Dead Sea near Kibbutz Ein Gedi, Israel July 27, 2015. The Dead Sea is shrinking, and as its waters vanish at a rate of more than one meter a year, hundreds of sinkholes, some the size of a basketball court, some two storeys deep, are devouring land where the shoreline once stood. Picture taken July 27, 2015. REUTERS/Amir Cohen 

An abandoned tourist resort is seen near the shore of the Dead Sea, Israel July 28, 2015. The Dead Sea is shrinking, and as its waters vanish at a rate of more than one meter a year, hundreds of sinkholes, some the size of a basketball court, some two storeys deep, are devouring land where the shoreline once stood. Picture taken July 28, 2015. REUTERS/Amir Cohen 

A cracked road is seen at an abandoned vacation resort on the shore of the Dead Sea near Kibbutz Ein Gedi, Israel July 27, 2015. The Dead Sea is shrinking, and as its waters vanish at a rate of more than one meter a year, hundreds of sinkholes, some the size of a basketball court, some two storeys deep, are devouring land where the shoreline once stood. Picture taken July 27, 2015. REUTERS/Amir Cohen