Analysis of information sources in references of the Wikipedia article "Atəşgah (Bakı)" in Azerbaijani language version.
Not far from Ganjak, on the Apseron Peninsula, was the at assail 'fire-temple' of Baku, whose fires were fed by natural gases. The present building was built probably no earlier than the eighteenth century, and inscriptions in Indian scripts on its walls indicate it was a place of pilgrimage for Parsi travellers in recent times. The fires are now extinguished, but it is possible that the Baku temple was a centre of Zoroastrian worship in the Caucasus before the simple shrine now standing on the site was constructed.
