Lots of discoveries are uncovered by the wind, rain or through people's everyday work. For example , the dead sea scrolls were found by a shepherd boy. Archaeologists have developed special ways to look for less obvious sites. For example, clues to a site can come from aerial photographs. Archaeologists also use magnetic clues, electrical clues, written evidence and legends to help find sites.
Archaeologists often obtain information from aerial photographs.
Crop marks can indicate sites. From these photographs, you can see if the crops are growing high or low. If they're growing high there's probably a ditch beneath. If it's low there's probably a wall or a structure. Shadow marks show shadows on banks and ditches in the early mornings and late evenings.