Shadow marks are surface patterns formed when low-angle sunlight casts elongated shadows across slight variations in ground elevation, revealing buried or eroded features otherwise invisible at ground level. Commonly observed through aerial photography or satellite imagery, shadow marks assist archaeologists in identifying ancient structures, earthworks, and landscape modifications.
Shadow marks are surface patterns formed when low-angle sunlight casts elongated shadows across slight variations in ground elevation, revealing buried or eroded features otherwise invisible at ground level. Commonly observed through aerial photography or satellite imagery, shadow marks assist archaeologists in identifying ancient structures, earthworks, and landscape modifications.
Source: Wikipedia "Shadow marks" · CC BY-SA 4.0
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