An interesting cover from Israel, depicting a single stamp issued in 2009 on topic "The Dead Sea, the lowest place on Earth".
The Dead Sea is a salt lake bordered by Jordan to the east and Israel and Palestine to the west. It is 9,6 times as salty as the ocean and one of the world's saltiest bodies of water. The Dead Sea water as adensity of 1,24 kg/litre, whcih make swimming similar to floating.