Caspian Sea of around 149,200 square miles (386,400 square km)— bigger than the region of Japan—and its surface lies somewhere in the range of 90 feet (27 meters) below sea level. The sea bed in the southern part reaches as low as 1,023 m (3,356 ft) below sea level, which is the second lowest natural depression on earth after Lake Baikal (−1,180 m, −3,871 ft). The ancient inhabitants of its coast perceived the Caspian Sea as an ocean, probably because of its saltiness and large size. The sea has a surface area of 371,000 km (143,200 sq mi) (not including the detached
East of England range in the UK. North Cambridgeshire and the Essex Coast have most of the around 5% of the region which is below 10 metres above sea level. The Fens are partly in North Cambridgeshire which is notable for the lowest point in the country in the land of the village of Holme below mean sea level which was once Whittlesey Mere. The highest point is at Clipper Down at , in the far south-western corner of the region in the Ivinghoe Hills. Basildon and Harlow (Essex), with Stevenage and Hemel Hempstead (Hertfordshire), were main New Towns in the 1950s and