What is "firozkoh"

Firozkoh ( Persian/ Pashto: فیروزکوه, Fīrōzkōh), or Turquoise Mountain, is the lost capital of the Ghorid dynasty, in the Ghor Province of central Afghanistan. It was reputedly one of the greatest cities of its age, but was destroyed by Ögedei Khan, son of Genghis Khan, in the early 1220s and lost to history.

It has been proposed that the magnificent Minaret of Jam, in Shahrak District, Ghor Province, is the only standing remains of the city. It is also believed that the ancient city was the home of a Jewish trading community, documented by inscriptions on tombstones found in the 1950s. The scholar Walter Fischel published an article reviewing the finds and establishing the connections of the Firozkoh community with other Jewish communities in early Medieval Afghanistan.