The Pyramid of Khafre

The Pyramid of Khafre has recently re-opened along with six other ancient tombs at Giza, Cairo after a long period of restoration.

The restoration took over 10 years after it was discovered that the large volume of visitors over the years had raised levels of humidity inside the structures to levels of up to 80 per cent. Apparently every visitor to the Pyramids releases an average of 20 grams of water vapour through sweat and this was causing damage to the plaster that covers part of the Grand Gallery.