Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Built Environment (hierarchy name)
4. Settlements and Landscapes (hierarchy name)
5. landscapes (environments)
6. natural landscapes
7. landforms (terrestrial)
8. natural arches

Anotations

Scope note:

Natural arches that have been formed by a current of water, often leaving a formation that resembles a bridge. For similar structures that were not formed by a current of water, use the broader "natural arches."