The Instagram-focused stone-stacking trend is plaguing beaches and national parks across the world, including in Tenerife.
The Canary Island is now calling for an end to these potentially destructive, man-made structures, following the lead of other tourist spots.
In recent years, visitors have collected stones and piled them on top of one another in places where rocks abound from Acadia National Park in Maine to Tenerife's beaches.
On the Canary Island, the structures are found at Playa Jardín near Puerto de la Cruz and El Beril, close to Adeje.
The stacks are like cairns – which have historical ceremonial and spiritual purposes – but these are merely recreational.
Instagram accounts and...