FILE PHOTO: Britain Football Soccer - Celtic v Leicester City - International Champions Cup - Celtic Park - 23/7/16 Celtic fans in the safe standing area before the match. Action Images via Reuters / Craig Brough / Livepic / File Photo
ZURICH (Reuters) - Former Borussia Dortmund coach Juergen Klopp once described entering the pitch to the clamour of fans on Europe's biggest standing tribune at the club's Signal Iduna stadium as "like being born".
"You go through this dark tunnel to get on to the pitch, it's precisely two metres high," he said.
