Dowsing, sometimes called divining or water witching, is the practice which dowsers say permits them to detect hidden or buried water, metals, gemstones, or other such objects without the use of scientific apparatus. A Y- or L-shaped twig or rod is use during dowsing, but some dowsers use other equipment or no equipment at all.
Dowsing is as old as remote viewing and up to this day, still in practice despite scientific evidence disproving its efficacy.
Being a dowser in the old days, was a position of prestige. Regardless that at one point the Catholic Church punished anyone who practice dowsing, claiming that is what witchcraft.
I remember my grandfather who many people used to come by to ask for his services as a dowser. He simply took a branch from a tree in “Y” shape and started to search for water. He used those skills as well for farming in his own land.
About 99% of the population can be successful using dowsing rods or pendulums.
Here are two interesting movie clips on this subject:
Introduction to dowsing