The steps to the Apadana entrance and the
doorway to the 2500-year-old palaces in Persepolis have
been eroded by 1 to 2 mm.
The erosion in the world heritage site of Persepolis has
made the experts so anxious that they have begun a special
study of the Achaemenid capital to find out about the
reasons of the erosion of bas relieves and the other parts
of this ancient site.
"According to our studies, the traffic of visitors of
which the number in some days goes up to 20 thousand is
one of the reasons for the erosion of the floor of the
steps and doorways in Persepolis", Hassan Rahsaz, a
technician in Persepolis historical complex, told CHN.
Given the extensive erosion, the experts in Parse and
Pasargadae research foundation have looked for suitable
ways in the last few years to prevent more damage in this
site. In a pilot project, a part of the eastern stairway
to one of the palaces is covered with timber, and 882
meters of the floor of the steps and doorways will be
covered with Indian redwood, said Rahsaz.
There will be a space between the steps and the floor
timber, so that the air is circulated and dampness is
Founded by Darius I the Great in 518
B.C., Persepolis was the capital of the Achaemenid Empire.
It was built on an immense half-artificial, half-natural
terrace, where the king of kings created an impressive
palace complex inspired by Mesopotamian models. The
importance and quality of the monumental ruins make it a
unique archaeological site.