Group says Landscape Arch in Arches NP, Not Kolob Arch in Zion NP, is World's Largest Span of Stone
![](https://www.nationalparkstraveler.org/sites/default/files/styles/npt_square2/public/default_images/npt_icons_0.png?itok=8J64sZS9)
If you stood beneath both Landscape Arch in Arches National Park and Kolob Arch in Zion National Park, could you tell which span is longer? Probably not, but a group has come up with a standardized way to measure arches and says Landscape is the longer span of stone.