I think it was Juan O Savin who mentioned the Ark of Gabriel recently? Here is some relevant information.

Some information in the following article is from an 2015 Sorcha post:
Russia Begins Transport Of Saudi Arabia’s Mysterious “Ark of Gabriel” To Antarctica
https://www.whatdoesitmean.com/index1955.htm

Source of the following article, which has links and media:
https://www.gaia.com/article/the-ark-of-gabriel-unearthing-an-ancient-secret-weapon

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The Ark of Gabriel: Unearthing an Ancient Secret Weapon
By Tasha Shayne
July 26, 2019

Pope Francis’s meeting with the Patriarch Kirill? Russian ships found docking at Arabic ports? What could possibly be so important that would bring religious entities who haven’t met in 1,000 years, together? Some believe they know the answer: to move the Ark of Gabriel from the Grand Mosque in Mecca, to a secret base in Antarctica where it could be safely kept.

Not to be confused with the Ark of the Covenant, which houses the two stone slabs of the Ten Commandments, the Ark of Gabriel, which is not mentioned in the Christian Bible, is a mysterious device, a secret weapon that many people are only beginning to learn about. Its legend has been perpetuated by the havoc it has wreaked over the centuries, as well as its potential to be unleashed upon the world.

This legend is said to have ties to both the Christian and Islamic faiths in that Archangel Gabriel is sacred to both — he foretold the birth of Jesus and dictated the entirety of the Koran to the Prophet Muhammed.

When the Roman Catholic Crusaders pillaged Constantinople in 1204, the Eastern Orthodox Church was able to squirrel away the contents of a manuscript from the Hagia Sophia Cathedral, titled “Gabriel’s Instructions to Muhammed.” The document details the message that the archangel gave to Muhammed in a cave near the holy city of Mecca, Saudi Arabia. It tells of a box — an ark — that holds a “tremendous power” and belongs only to God. This ark was forbidden to be used until the “Resurrection Day,” and until then, buried in an altar within “the place of worship of angels before the creation of man.”

To the followers of Islam,“the place of worship of angels before the creation of man” could be no place other than Mecca — the holy city where all devout Muslims must attempt a hajj, a yearly five-day pilgrimage, at least once in their lifetimes. And it is here that the Ark of Gabriel was said to be buried, beneath the Grand Mosque, quietly waiting for the end of the world.

But due to the ever-growing influx of pilgrims coming to pray at the Grand Mosque, the structure has had to continually expand to keep up. During such construction efforts, a crew of laborers purportedly discovered the Ark of Gabriel that had been secreted away for over a thousand years. The consequences were severe: On Sept. 11, 2015, a crane fell, causing 107 casualties, including the 15-man crew, and injuring as many as 238.

The conspiracy alleges that, as a cover-up, the spokesman for the Presidency of the Grand Mosque and the Prophet Mosque attributed the so-called accident to “a strong sandstorm, winds and torrential rains.” Why? A report that’s claimed to belong to the Russian Ministry of Defense says it was on this day that the construction crew attempted to remove the Ark, and it states that the workers were killed by a plasma emission that spewed up from the ground with such vengeance that it knocked over the massive crane.

Twelve days later disaster struck again, this time three days into the hajj, when millions had gathered from across the world to worship in Mecca, slaughtering at least 2,400 worshippers. The cause? A stampede of people whose origins have yet to be explained. However, many people believe it was another plasma emission, made after a second attempt to unearth the Ark.

In December 2015, Russian naval warships were seen docking in Jeddah, a key Saudi Arabian port city, not far from Mecca.

Shortly after the second grave accident, Grand Mosque emissaries decided they wouldn’t take anymore chances. They reached out to Patriarch Kirill, knowing not only that the Church was in possession of “Gabriel’s Instructions to Muhammed,” but that the instructions likely contained information on how to safely approach the Ark.

Two months later, the heads of the Russian Orthodox Church and the Roman Catholic Church met for the first time in 962 years, where it’s thought that the Pope gave the Patriarch Kirill the vital information that had been missing from the manuscript stolen at the Hagia Sophia in 1204. Immediately after their meeting, the Patriarch Kirill voyaged to Antarctica himself, to allegedly perform a ritual, using the ancient documents.

Of course, without any hard evidence, the Ark of Gabriel, and the rumors surrounding it, can only be relegated to conjecture. That said, it is comforting to think that some of the world’s most powerful entities would set aside their differences to come together and fend off the end of the world. But if it is true, the hope is that the Ark stays undisturbed in the most desolate region of the world for millennia to come.

Upon being briefed of the cataclysmic potential of the Ark of Gabriel, Russian Prime Minister Vladimir Putin ordered his naval ships to transport the Ark (using the Kirill’s precautions) to Antarctica, where the Holy Trinity Russian Orthodox Church stands as the only religious structure on the continent.
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MrF adds:

Now I am reminded of the SG-1 spinoff, Stargate: The Ark of Truth, a 1hr 41min movie with the following blurb:

"SG-1 search for an Ancient artifact called the Ark of Truth to finally defeat the Ori. However, the Ark is in the Ori's galaxy."

The movie is listed as being available on Tubi and Youtube, both with ads.

I actually preferred the other SG-1 spinoff movie, Stargate: Continuum.