The Dead Sea, shared by Israel, Palestine, and Jordan, is the lowest point on dry land, at 432.65 m (1,419 ft) below sea level. In addition, the lowest points attainable by transportation are any of the roads alongside the Dead Sea in Israel and Jordan.
The lowest point on land not covered by liquid water is the canyon under Denman Glacier at Queen Mary Land in Antarctica, with the bedrock being 3,500 m (11,500 ft) below sea level.
The highest point accessible by an oceangoing vessel is a section of the Rhine-Main-Danube Canal between the Hilpoltstein and Bachhausen locks (pictured) in Bavaria, Germany, which raise the surface water level in the canal to 406 m (1,332 ft) above sea level.
The highest river is disputed, but it's likely the Yarlung Tsangpo, the source of which is about 6,020 m (19,751 ft) above sea level. Originating in western Tibet, it ultimately flows into India and Bangladesh.
The most distant point from land is the Pacific pole of inaccessibility (also called "Nemo Point"), which lies in the South Pacific Ocean, approximately 2,688 km (1,670 mi) from the nearest land.
The road to Umling near Demchock in Ladakh, India is claimed to be the world's highest unsurfaced road. At its highest point, the road reaches an elevation of 5,800 m (19,029 ft).
The highest point accessible by road (dead end) is on a mining road to the summit of Aucanquilcha in Chile, which reaches an elevation of 6,176 m (20,262 ft).
The lowest undersea highway tunnel is the Eiksund Tunnel in Norway, at 287 m (942 ft) below sea level. Pictured is the opening ceremony on February 23, 2008.
