ISIS Destroys Another Ancient Landmark: 'We’re Going to Lose Palmyra,' Syrian Director Says

An arch in the ancient Syrian city of Palmyra is the latest casualty.

— -- A 2,000-year-old arch in the ancient Syrian city of Palmyra is the latest casualty by ISIS militants.

Professor Maamoun Abduilkarim, the country’s director of antiquities, confirmed that ISIS Sunday blew up the Arch of Triumph, one of the city’s most recognizable sites. “Shocked” and “shameful,” he told ABC News, noting that unlike the two temples that were destroyed earlier this year, the arch has no religious significance.

The arch was known to locals as the “Bridge of the Desert” because it linked the Roman Empire to Persia and the East.

Professor Abduilkarim said he had not seen photos or videos of the devastation, but learned reports from eyewitnesses.

“They’re destroying building by building,” he said, “within three to six months, at this pace, we’re going to lose Palmyra.”

The office of the Syrian presidency posted a statement on its official Facebook page today condemning the destruction of the arch as "revenge" of the civilization that "disrupts ... their darkness."

There are two choices, Professor Abduilkarim said: sit and watch and lose the city, or the Syrian army advances quickly with the support of the international forces and retakes Palmyra.

ABC News’ Alexander Mallin contributed to this report.

EDITOR'S NOTE: The headline on an earlier version of this story incorrectly used the term “temple” to describe the Arch of Triumph.