Warning: Article contains content some readers may find distressing
It's been nearly 23 years since the devastating events of the September 11 changed the events of modern history forever.
A series of coordinated terrorist attacks across the United States, 9/11 took the lives of nearly 3,000 people, with an estimated between 6,000 and 25,000 extra people being injured on that fateful day.
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The footage was also broadcasted by news outlets around the world, with the majority of people alive remembering where they were the moment the two United Airlines planes crashed into the North and South Towers of New York City's World Trade Centre.
Despite the attacks being one of the most recognisable events of the past 25 years, there is still plenty of more from the day we haven't seen - with one man recently uploading footage he captured on the day to YouTube.
Uploaded by user Kei Sugimoto last week (23 July), the footage was taken from 'the roof of 64 St Marks Place in NYC' with a on a Sony VX2000 with teleconverter and offers us a completely different perspective of the tragedy.
Sugimoto wrote that he had decided to share the footage now for 'historical archival purposes' only after recently coming across the recordings in his 'closet'.
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He has uploaded the full hour-long footage he recorded to YouTube, as well as two smaller clips showing the moment both of the towers collapsed (both in original quality and upscaled to 4k definition). Check out the chilling footage below:
The footage has since gone viral following Sugimoto's decision to upload it, with several Redditors sharing their reactions to seeing the incident from a whole new angle.
"It’s crazy that we’re almost 23 years out and still getting new footage," one person wrote, while another added: "Makes me wonder how much history is being stored in people’s attics or basements waiting to be unearthed."
Sugimoto also addressed a serious of questions from curious viewers, explaining that he'd woken up on the day to discover several people on the streets 'staring south' before realising the North Tower was burning.
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After seeing a plane hit the second tower, he went to grab his recording equipment to document the situation and later attempting to turn the footage over to authorities, only to turned away amid the chaos of the day.
Over 22 years later, viewers were grateful that Sugimoto chose to share the footage, with one person writing: "Thank you for uploading this film, it's important for us to see, we really appreciate it."
The video also prompted others to share their recollections of the day, with several commenters remembering exactly where they were when the tragedy occurred.
"Looking back on this 23 years ago, and I remember it like it was yesterday," a second person commented. "Shocking.
Brenna Cooper