Parent Landform or Range

This dimension names the larger landform or mountain range that a smaller feature belongs to, a single peak within a range, for example. Wikipedia's own list of landforms, "hills, mountains, canyons, and valleys, as well as shoreline features such as bays, peninsulas, and seas," shows how often a smaller feature sits inside a bigger one of the same kind. Browsing by parent landform groups individual features under the range or system that contains them.