A never-before-seen-footage of the collapse of Twin Towers was shared by a witness 23 years after the horrific event.

The video, posted on YouTube by Kei Sugimoto, was taken from a previously “unseen angle.”

According to Kei, it was taken “from the roof of 64 St Marks Place in NYC on a Sony VX2000 with teleconverter” on September 11, 2001, with a Sony VX2000 camera.

He recalled the tragic day saying he first believed that a fire broke in the building. However, it wasn’t until the second attack took place that he realized what had really happened.

Kei discovered the footage after going through some old boxes.

He was concerned that some of the tapes were ruined, but he then tried to digitize the one of the Twin Towers collapsing and shared it online.

The footage of the Twin Towers collapsing is a painful reminder of the day that changed not only America but the entire world.

“This footage offers a unique perspective not seen from the south or east,” one person commented. It wasn’t long until many realized it was indeed a unique recording.

“It’s crazy that we’re almost 23 years out and still getting new footage,” a person on Reddit commented.

The release of the video, that has since gone viral, highlights the importance of preserving historical records. “Makes me wonder how much history is being stored in people’s attics or basements waiting to be unearthed,” someone commented. Honestly, we ask ourselves the same question.

This never-before-seen footage that offers a different perspective serves as a reminder for the future generations of the scale of the tragedy and the lasting impact it left.

The 9/11 attack, when 19 members of the Al-Qaeda terrorist group hijacked four planes and used them as weapons in a coordinated assault on the United States, with two of those planes striking the World Trade Center in New York City and causing the Twin Towers to collapse, resulted in nearly 3,000 deaths.