Dowsing

Dowsing is a type of divination employed in attempts to locate ground water, buried metals or ores, gemstones, oil, claimed radiations, gravesites, malign "earth vibrations" and many other objects and materials without the use of a scientific apparatus.

What is dowsing and how does it work?

Also known as divining, this is the ancient practice of holding twigs or metal rods that are supposed to move in response to hidden objects. It is often used to look for water, and farmers in California have been known to ask dowsers to find ways to irrigate their land.