Khair Khaneh
Afghanistan
Khair Khaneh is an archaeological site located near Kabul, Afghanistan that was excavated in the 1930s by Joseph Hackin. Some scholars have considered the marble statue found at the site to be of Mithra. Stating that the solar deity of Khair Khaneh is as close as possible to the Iranian Mithra and that identity with Mithras is put beyond doubt by numismatic evidence.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).