Continent Europe and Asia together as a single continent, dubbed "Eurasia". In this model, the world is divided into six continents, with North America and South America considered separate continents. Geologists use the term "continent" in a different manner from geographers. In geology a continent is defined by continental crust: a platform of metamorphic and igneous rock, largely of granitic composition. Some geologists restrict the term 'continent' to portions of the crust built around stable Precambrian "shield", typically 1.5 to 3.8 billion years old, called a craton. The craton itself is an accretionary complex of ancient mobile belts (mountain belts) from
Karain semi-continent the continent is reputed to be unbroken jungle surrounding the river. The largest lake is at the headwaters of the Karain River, Lake M'Pulo. This in turn is fed by a number of large rivers (the Treacher, the Ono, the Turain, the Kasiholo, the Loborango, the M'Pulo, and the Puchiaihipopolobanjo), which are themselves fed by runoff from the mountain range that separates Islandia from the rest of Karain. The only city of note on lake M'Pulo is Todojil, and to its south and west is the massive Karain Swamp, which forms the upper end of the German Protectorate. The Karain