Eagle eyed Tottenham Hotspur fans have noticed that the synthetic NFL pitch has started to be laid at the new Spurs stadium.
The real turf football pitch will sit in three pitch-long steel trays, each weighing more than 3,000 tonnes, and will retract under the South Stand to reveal the artificial playing surface underneath.
It will take approximately 25 minutes to switch from one surface to another.
Spurs have selected Sheffield company SCX to produce a grass pitch that sits directly above an artificial surface, with the latter being used for NFL matches, music concerts and other events.
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