Sidescan sonar applications in limnoarchaeology

Sidescan sonar, a well known marine geophysical exploration technique, widely utilized in maritime archaeology, has great potential as a reconnaissance tool in limnoarchaeological surveys. Its application in the identification of manmade structures on the floor of a flooded valley (Glenfarg Reservoir, Scotland) and the location of nearshore settlements (crannogs) in a natural water body (Loch Tay, Scotland) are described and discussed. It is suggested that sidescan sonar is a more efficient method of underwater archaeological reconnaissance than diver surveys.