Which of the following is considered a valid monument for legal descriptions?

A valid monument for legal descriptions refers to a physical marker that can be used to identify the boundaries of a property. Large rocks serve as valid monuments because they are natural, permanent features that are typically not subject to change over time. In legal descriptions, the use of natural elements like large rocks can help establish precise boundary lines, making them important in surveying and property delineation.

On the other hand, while fence lines, wooden stakes, and building corners may also be used to indicate property boundaries, they are not as universally reliable as large rocks. Fence lines can be altered or removed, wooden stakes are often temporary and can be moved, and building corners can change due to demolition or construction activities. Therefore, large rocks are recognized for their stability and permanence in defining property lines.