The Scottish Highlands, the Appalachians, and the Atlas are the same mountain range, once connected as the Central Pangean Mountains - Vivid Maps

The Central Pangean Mountains were a significant mountain range that connected various parts of the supercontinent Pangaea during the Carboniferous, Permian Triassic periods. They spanned across different regions such as Scotland, Appalachia, and Atlas, but were formed due to the collision between Laurussia and Gondwana. The mountains experienced significant weathering over time, leading to a decrease in their peak heights and the formation of deep intermontane plains. By the Middle Triassic, these mountains had become considerably reduced in size, and by the Jurassic period, they had disappeared as a continuous chain in Western Europe.