All Mountain Ranges and Massifs (World)

This group collects the 23 Landforms subcategory members that the atlas already places under its own Mountain Ranges and Massifs subcategory, the whole real-world population the atlas covers there. It is a single flat group, not split further by region or country, because Mountain Ranges and Massifs stays well under the atlas's own hundred-member threshold for a further split. It sits directly under the Mountain Ranges and Massifs subcategory and under the atlas's own Groups category, giving a reader a direct browse path from either the Mountain Ranges and Massifs subcategory page or the Groups index.