When was the Dead Sea first recognized as the lowest point on land?

The Dead Sea’s position as the lowest exposed point on Earth’s land surface was established through modern surveying and later confirmed by more precise geodetic measurements. Its shoreline and surface sit about 430 metres below sea level, though the exact figure changes as the water level falls. The lake is famous for its extreme salinity, which prevents most life from surviving in the water. It lies between Jordan and Israel/Palestine.