Cropmark
![Cropmarks at a protohistoric site at Grézac, France](/Images/godic/202501/07/Grezac4416.jpg")
![Sketched diagram of a negative cropmark above a wall and a positive cropmark above a ditch](/Images/godic/202501/07/Diagramm_bewuchs4416.jpg")
![Kite aerial photo of crop marks at Nesley, near Tetbury, Gloucestershire. Cereal crop left, beans right. The relative intensity in the crops was reversed in the near infra-red.](/Images/godic/202501/07/Kite_aerial_photo_of_crop_marks_at_Nesley,_near_Tetbury,_Gloucestershire4416.jpg")
![After a long hot dry period, cropmark on a lawn caused by a line of flagstones which the grass had overgrown and buried.](/Images/godic/202501/07/Aa_lawn_flagstones_cropmark4416.jpg")
Cropmarks or Crop marks are a means through which sub-surface archaeological, natural and recent features may be visible from the air or a vantage point on higher ground or a temporary platform. Along with parch marks, soil marks and frost marks can reveal buried archaeological sites not visible from the ground.