Eurasia

Eurasia is a massive continent, containing all of Asia, mainland portions of the former European continent, and the Middle East. Eurasia is considered the largest continent on Terra, though debates of its true size are oftentimes unable to give clear boundaries of where it ends, and other connected ones such as North America, Australia, and Africa begin.   Due to extensive continental collisions, Eurasia is dominated by massive mountain ranges near these collision points, having raised much of the continental shelf. These young mountains are jagged and many are still growing at a slow but steady pace. Due to their extreme heights blocking rainfall and moisture from the oceans, the interior of the continent is a massive cool desert, only occasionally peppered with low lying glacial valleys dominated by conifers or lush tundra.   By a large margin, Eurasia is home to Terra's largest continuous tundra along its northern border. This tundra plain is peppered with glaciers, thick layers of permafrost, and remains frozen throughout the vast majority of the year; only its very southern portions see any melt at all, and generally only at the height of summer. This allows for some sparse vegetation to grow, though it is almost always short and tough grasses, mosses, and lichens that can resist the brutal cold. Due to being located so high north, much of the region is subject to so called eternal summers and eternal winters, where during these portions of the year, the sun appears to never set or never rise, depending on the planet's tilt.   Coastal regions, particularly around the Pacific Ocean, are much more lush, and the south eastern portion of Eurasia is home to some of the few tropical and sub-tropical regions of the world. Although not quite as dense as the tropical rainforests of South America, Africa, and Australia due to their more northern latitude, they are just like any other home to unique flora and fauna.