IDU Mainland

The IDU mainlandis one of several large areas of land in the IDU region, which are identified by convention rather than any strict criteria. The specific areas of land vary, but two areas are commonly referred to - they are the IDU mainland and the Southern Continent.

In areas that do not necessarily consider themselves a part of the IDU mainland they may use the term "the mainland IDU" (such as islands or peninsulas). A term which refers to a subjective description of the landmass, that is, the IDU mainland.

The narrowest meaning of IDU mainland or mainland IDU is that of the continuous area of land, with the coastline and any land boundaries forming the edge of the central IDU landmass. In this sense the term mainland IDU is used to refer to the landmass, excluding islands such as the Ayyubids. However, from the perspective of geology or physical geography, the IDU mainland may be extended beyond the confines of continuous dry land to include the shallow, submerged adjacent area and the islands off of the coast, as they are structurally part of the IDU mainland. In this sense the Mich-Inzl Archipelago is a part of mainland IDU.