Mexican wave celebrates 400 years of Derry walls
Almost 2,000 people took part in a Mexican wave on Sunday to celebrate 400 years of Derry walls in Londonderry.
The event was organised by the Holywell Trust to recreate the stepping out of the ground, in August 1613, on which the city walls were to be built.
Volunteers dressed in red t-shirts and formed a mile-long Mexican wave.
There was also a re-enactment of the 1613 charter market with living history performers in Guildhall Square.
A long-horned bull was in the square along with food, weapons and costumes on display to help recreate the ambience of a 17th century charter market.
Project co-ordinator Mark Lusby said the events were about building a positive future from history.
"It was tremendous to see people from Derry out on the walls along with people from elsewhere, including Donegal," he said.
"Sunday was about reclaiming the walls because, 400 years ago, it was quite an exclusive act by two Londoners and eight army captains.
"People of all cultures and traditions celebrated the walls today and that's what it is all about."