|natural = arch|
|A rock arch naturally formed by erosion, with an opening underneath.|
|Used on these elements|
|Status: in use|
|Tools for this tag|
A natural arch or bridge. Unlike with a cave or other features, one can look through an arch from one side and see a substantial amount of ground or sky on the other. Like manmade bridges, natural arches can have a highway on top; the difference is that the actual hole is formed by erosion.
Natural arches are often landmarks. Photographers may search for photogenic natural arches, and geologists for scientific study.
Examples include those listed here on Wikipedia: Notable natural arches.