What physical feature is commonly used in the metes and bounds description?

In metes and bounds descriptions, physical features called "monuments" play a crucial role in defining property boundaries. Monuments are fixed points of reference used to delineate the perimeter of a parcel of land. These can include natural features such as trees or rocks, or man-made features like fences or boundary markers.

The significance of monuments lies in their ability to provide clear, identifiable points that can be referenced on the ground. This method is particularly useful in areas where the land does not conform easily to rectangular survey methods, allowing for a more detailed and flexible description of property boundaries.

While rivers, buildings, and roads can sometimes serve as features in a metes and bounds description, they are not specifically identified as "monuments." Monuments are generally more enduring and recognizable points used specifically for boundary delineation. Therefore, the inclusion of monuments as a fundamental element in metes and bounds makes this option the correct one.