definition
strict definition
natural object
A fixed, locatable feature of the natural environment, including naturally occurring land and water features.
Natural objects are fixed objects which occur as part of natural geography, including land and water features as well as other locatable parts of the natural environment.
The feature occurs as part of the natural geography rather than being a deliberate construction. Its fixed location distinguishes it from a freely moving object.
A built object is a man-made construction with its own identity. The natural object instead derives its form from the natural environment.