Mount Chimaera was a place or places in ancient Lycia, notable for volcanic phenomena and said by some ancient sources to be the origin of the myth of the Chimera.\r\rCtesias is the oldest traceable author to offer this euhemerizing theory. This was the citation given by Pliny the Elder, who in his second book of Historia Naturalis identified the Chimaera with the permanent gas vents in Mount Chimera, in the country of the ancient Lycian city of Phaselis, which he described as being \"on fire\", adding that it \"...indeed burned with a flame that does not die by day or night\". Pliny was quoted by Photius and Agricola, although the exact location of the mountain described by Strabo is still open to debate.\r\rStrabo and Pliny are the only surviving ancient sources who would be expected to discuss a Lycian toponym, but the placename is also attested by Isidore of Seville and Servius, the commentator on the Aeneid. Strabo held the Chimaera to be a ravine on a different mountain in Lycia, placing it unhesitatingly in the vicinity of the Cragus Mountains, southern part of the present Babada\u011f, some 75 km. due west as the crow flies, and Isidore quotes writers on natural history (see below) that Mount Chimaera was on fire here, had lions and goats there, and was full of snakes over there. Servius goes so far as to arrange these with the lions on the peak of the mountain, pastures full of goats in the middle, and serpents all about the base, thus imitating Homer’s description of the monster.