This list of longest natural arches ranks the world's
natural arch
A natural arch, natural bridge, or (less commonly) rock arch is a natural landform where an arch has formed with an opening underneath. Natural arches commonly form where inland cliffs, coastal cliffs, fins or stacks are subject to erosion ...
es by the length of their span as defined and measured by the
Natural Arch and Bridge Society (NABS).
As a disclaimer, the NABS states that the information in this list, and therefore the rankings, may change due to more accurate measurements in the future, changes in span length due to natural forces, and the discovery of previously undocumented arches.
Longest natural arches
All known natural arches with span lengths of or greater are included in the list. Sort by clicking on column headings, excepting only the ''Image'' and ''Notes'' columns.
References
{{DEFAULTSORT:List Of Longest Natural Arches
Arches
An arch is a vertical curved structure that spans an elevated space and may or may not support the weight above it, or in case of a horizontal arch like an arch dam, the hydrostatic pressure against it.
Arches may be synonymous with vault ...
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Arches
An arch is a vertical curved structure that spans an elevated space and may or may not support the weight above it, or in case of a horizontal arch like an arch dam, the hydrostatic pressure against it.
Arches may be synonymous with vault ...
Arches, natural