Monumentsearch for term

A physical structure, such as an iron post, marked stone or tree in place, that marks the location of a corneri point established by a cadastral survey. Objects to be ranked as monuments should have certain physical properties such as visibility, durability, and stability, and they must define location without resorting to measurements. Monument and corner are not synonymous, although the two terms are often used largely in the same sense (Glossaries of Bureau of Land Management Surveying and Mapping Terms).