On 1 March 1975, Scotland edged out Wales 12-10 in a Five Nations thriller that has gone down in folklore for the sheer scale of the crowd.
More than 100,000 fans officially packed the terraces, aslthough many believe the true number was closer to 130,000 – a figure that remains the stuff of legend.
Former Scotland player and head coach Sir Ian McGeechan is one of the panel and shared his memories of the day.
“In those days, you just turned up, bought your ticket, and walked in – no pre-booking,” he said. “The SRU never accepted it was 130,000 – but it was.
“People were worried about the numbers – children being lifted down over the barriers to sit by the pitch. You couldn’t imagine it now, but it was incredible to witness.
“I was playing that day and one of the most enduring memories was the schoolboys sitting along the touchline, all in their uniforms, as was the style.
“We stopped Wales winning the Grand Slam. You remember the way you felt, not just what happened. You see just how much something can have such an impact on you.”