The Prince was given a guided tour of the facility, which is exploring how forest systems will respond to future increases in atmospheric carbon dioxide, including the effects on forest growth and on forest food webs.
His Royal Highness unveiled a plaque to mark his visit, which comes 12 months after the experiment began. The Prince was given a bottle, recovered from Mill Haft woodland in Staffordshire during construction of the BIFoR FACE facility, which containing a sample of the air used in the facility.