The Principality Stadium's SCALE roof walk and zip wire attraction has been temporarily closed, with the WRU ending its relationship with the company operating it amid big changes at the home of Welsh rugby. The attraction, which opened in April last year at a cost of around £5 million to the Welsh Rugby Union, offers visitors the chance to walk around the 60-metre-high stadium roof, zip wire across its canopy and abseil down to the ground. To do all three costs £89 per person, while the simple roof walk alone is £44. Despite being launched amid high hopes of driving big revenue for the union, interest in it has been hugely disappointing to the point where the WRU had to act. It was not operational during concert season at the stadium this summer, and those wanting to visit the attraction are still unable to buy tickets, with no dates available to book on the Scale website. Sign up to Inside Welsh rugby on Substack to get exclusive news stories and insight from behind the scenes in Welsh rugby. Prospective customers are being told that the attraction is "temporarily closed" due to "ongoing operational issues", with no date yet confirmed for when it will reopen. And the WRU has now issued a statement to WalesOnline, explaining what is going on. It comes after the WRU previously revealed plans to carry out work on the Principality's roof, with solar panels being installed to cut costs and make the iconic stadium more environmentally friendly. A spokesperson said: "After a bumper concert season at Principality Stadium a new solar panel installation is currently taking place which has meant its SCALE attraction has taken an extended hiatus. “The rooftop adventure, which is located at Principality Stadium in Cardiff , has temporarily stopped booking customers, but exciting news about a new partnership is coming soon. “The Welsh Rugby Union has confirmed it will form a new strategy for its SCALE attraction, which is in place and due to be announced in the coming weeks, after reaching mutual agreement with current facilitators Wire and Sky Ltd to discontinue their current business relationship.” Earlier this year, WRU chairman Richard Collier-Keywood admitted the roof walk and zip wire attraction was hugely underperforming, with the union open to selling it to Wire & Sky. The attraction was expected to follow the success of those also run by the same company at Anfield and the Tottenham Hotspur Stadium, but Collier-Keywood revealed that bookings had been hugely underwhelming. However, he added that improving the situation was a priority for the union. The WRU chairman had pointed to the summer months hopefully seeing an upturn in interest but things have clearly changed significantly, with the attraction closed throughout much of the dry holiday period. “We are working with Wire & Sky very closely to try and improve it," he had said. "That is pretty much close to the top of the list for me. "It is nowhere near the projections we had hoped for, so we are looking at this very closely with Wire & Sky. We are also entering into a better period with more people in the summer when it is sunny. "So, I think it is reasonable to see what happens over the summer period, but we are working with Wire & Sky to see how we can do this better.” Asked if the attraction could be sold with Wire & Sky potentially taking on ownership, Collier-Keywood added: “We are open to doing any sort of deal that improves the current position and for me nothing is off the table.”