IT looks simple, but those who have tried it say it is actually deceptively difficult.
And now Scots are being asked to show off their skills placing rocks on top of one another at the first stone stacking challenge in Dunbar.
Organisers say the unique event brings together the skills of traditional cairn building alongside the "artistic expression of rock balancing".
Stone stacking is an art-form in which rocks are placed delicately on top of one another to form different shapes without the use of anything other than the weight of the rocks and gravity.
The trick is to get the towers to balance, and accomplished stone stackers can create surprisingly tall structures which appear to defy the laws of physics.
Many people who undertake this activity across the globe, with the World Rock Stacking championships held in Texas at Llano Earth Festival.
The event is part of the East Lothian Council’s 2016 John Muir Festival, and takes place at Dunbar’s East Beach on 23 April.
A spokesman said: "This pastime is a great way to reconnect with the environment around you and can produce exceptional temporary works of art.
"The event allows people to create art installations and exhibitions with an interactive twist, and get involved in trying out a different art form."
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