Linked from
The 17 pages that link to Grand Canyon, each with the reason it gives.
Colorado RiverBroader topic: Its cliffs record the river’s long erosion of uplifted rock.
Colorado PlateauBroader topic: It exposes a deep cross-section of the plateau’s layered rocks.
ArizonaBroader topic: It is Arizona’s best-known landscape and a major national park.
Paul BunyanRelated: One tall tale attributes the canyon to a trench dragged by Paul and Babe.