What is the purpose of a "Witness Monument" in surveying?

A "Witness Monument" serves an important role in surveying, particularly in situations where the actual property corner cannot be occupied due to various reasons such as obstructions, erosion, or the land owner's preference. The primary purpose of a witness monument is to provide a physical reference point that helps in identifying the location of the corner, ensuring that future surveyors can accurately find and verify that corner even if they cannot access it directly.

This approach aids in maintaining the integrity and continuity of property surveys over time. It allows for precise referencing for subsequent surveys, as well as helping avoid disputes over property lines. While it is related to marking corners, it does not replace the actual physical corner marker but rather complements it by indicating its location in a reliable manner.