Several thousand people have taken part in a rally in west Belfast calling for an end to the delay in redeveloping the now derelict Casement Park, the home of Antrim GAA.
The protest was organised by South Antrim GAA, ahead of the Ulster championship match between Antrim and All Ireland champions Armagh at nearby Corrigan Park.
The ground's capacity is around 4,000, a fraction of the crowd that would have attended if Casement had been available.
Organisers of the march and rally said the aim is to put pressure on Stormont's Communities Minister, Gordon Lyons of the DUP, and Northern Ireland Secretary of State Hilary Benn to do more to ensure the stadium is rebuilt.
It is estimated that it would cost at least £260 million to build the new stadium, but only around £120m is currently available.
Casement Park, with a 34,500 capacity, had been earmarked to be a venue for games at the Euro 2028 football tournament but that plan had to be abandoned.
Ulster Rugby and the home of the Northern Ireland football team were given millions in funding as part of an agreement that also included the GAA's Casement Park, but that commitment has not been fulfilled.
With the project on hold, the plan has been shelved.
"It's a sad day here today that we are not welcoming you all to what should be a world class redeveloped Casement Park Stadium, " Kevin Gamble, chairperson of South Antrim told the crowd.
"Casement Park, as of today, has been closed for over 4,000 days, that's 12 years and counting.
"Ulster Rugby got their stadium in 2014, the Irish FA got their stadium in 2016, and I'm sure everyone in this audience here today supports funding and investment in sport, regardless of what that sport is. What we're here for today is calling for equality, for the GAA to get the stadium that we were promised over 13 years ago.
"For too long, the GAA and members of Antrim GAA also have been let down on the redevelopment of Casement Park," Mr Gamble said.
Antrim LGFA player Áine Turbidy told the crowd that ladies and girls GAA is being held back by the continuing delay.
"So many ladies and girls have missed out on that opportunity of playing in our iconic stadium, but the current generation and the next generation deserve better," she said.
"A new Casement should be a beacon of hope and opportunity for Belfast and the North in which we can create lasting legacies for all of our people."
Former Antrim captain Paddy Cunningham, who led the county to the Ulster final in 2009, said the GAA had been let down by the Stormont Executive and the British Government.
"Enough talk, it's now time for action," he said.
"Planning approval was granted for this great venue in July 2021, it is time to move forward without any further delay.
"We have heard false promises from the executive and the UK Government time and time again," Mr Cunningham said.
"It is utterly unacceptable that the GAA and Casement Park continues to be treated as second class citizens, and we will not accept it."
Many of those who took part in the rally later attended the Ulster Championship clash between Antrim and Armagh at Corrigan Park.
With around 4,000 season ticket holders, many Armagh fans could not attend because of the limited capacity.
A number of fans spoke of their anger that Casement has not been redeveloped as promised.
"It's a real pity this game couldn't be played at a ground with a bigger capacity here in Belfast. I just can't understand why we can't get the funding that has been promised," said one Antrim supporter.
"It's great that this game is being played in Belfast and not Newry as the GAA originally planned because of the capacity issue, but it should really be being played in a new Casement," said an Armagh fan.
GAA President Jarlath Burns attended the game and said he remains optimistic that the redevelopment will take place.
"We're working very hard to ensure that it will be redeveloped and we're very optimistic that that will happen sooner rather than later," he said.
"I think there's a lot of obligations on everybody involved, all the stakeholders, and really we're just waiting on the British government to say how much they're going to give.
"We've been very thankful to the Stormont Executive and the Irish Government for the amount they've given, the GAA has also given as well, so if we can get that money from the British Government we're confident we can get Casement started as soon as possible."
