There are over 3,000 species of lichen in Iran, with 500 to 700 varieties making ancient monuments their home. Some of the species at Persepolis were more than 1,700 years old.
Persepolis, Old Persian Parsa, or modern Takht-e Jamshid is an ancient capital of the kings of the Achaemenian dynasty of Iran (Persia), located about 50 km northeast of Shiraz in the Fars region of ...