The phrase "an ancient fire" is correct and usable in written English.
It can be used to describe a fire that has historical significance or has been burning for a long time, often evoking a sense of nostalgia or timelessness.
Example: "The villagers gathered around an ancient fire, sharing stories passed down through generations."
Alternatives: "a timeless flame" or "a historic blaze."
The experts were alerted to the hoard by a doctoral student at Beijing University who had found fossilized animal bones and evidence of an ancient fire--a strip of carbon granules--at the construction site for an office complex called "Dongfang Square" on Wangfujing Street.
He has an office in the university's geochemistry building, and also a lab, where, on this particular day, one of his research assistants was examining charcoal particles from an ancient forest fire.
Crossing southern Africa, we had passed through the Namib and Kalahari deserts, explored the Okavango Delta, been surrounded by hungry cheetahs, witnessed an ancient Holy Fire ceremony and watched trained giant rats sniffing for landmines.
27 July Family Bushcraft Day: from ancient fire lighting to building a hunting shelter, seasonal crafts to open-fire cooking, feel at home in the wildest woods.
There is a formal register, which he manages beautifully when he wants to: "the claustrophobic gauge of the canyonlike streets with their hanging garden of ancient fire escapes".
In Iran a few weeks ago I travelled with my 11-year-old son from Tehran to the ancient fire temple at Takht-e Soleymān, not far from the Iraqi border.
"When the earth's ancient fire cooled and shrank toward the core," Scott writes in the impressive, impressionistic opening pages of the novel, "it left behind a hard, uneven shelf of land... that was extraordinarily rich with minerals -- with hematite, magnetite, pyrite, quartz, agate and tourmaline".
Previously published radiocarbon dates for charcoal from the ancient fire pits showed that the oldest ridge dated to about 5100 years ago and the most recent was created about 400 years ago, about the time of the Spanish conquest.
Crude oil, originally a product of photosynthesis, represented for many decades a cheap and easy source of energy, but its legacy is leading to an expensive bill, in terms of ecological and biogeological issues, and it is on its way to vanishing and leaving mankind without its ancient fire.
Then head up Eighth Avenue toward the hard-to-miss triangular frames of the Hearst Tower (No. 71) between 56th and 57th Streets, which contrast sharply with the ancient, fire-escape-tattooed tenement buildings on the block before it, and its own 1927 base (the old Hearst headquarters).
