Queen Elizabeth II's official cause of death was released Thursday.
The 96-year-old monarch died of old age.
The certificate, published by National Records of Scotland, records that Elizabeth died at Balmoral Castle in Ballater, Scotland, on Sept. 8 at 3.10 p.m. The document was signed by the queen’s daughter, Princess Anne.
The queen's tomb is located inside the King George VI Memorial Chapel, part of St. George’s Chapel at Windsor Castle.
St. George's Chapel reopened to the public Thursday, and hundreds of people lined up outside Windsor to pay their respects to Queen Elizabeth 10 days after she was laid to rest in the tomb.
The tomb is marked by a slab of hand-carved Belgian black marble. The queen’s name is inscribed on the ledger stone in brass letter inlays, alongside the names of her husband, mother and father.
To visit the chapel, royal fans must buy a ticket to Windsor Castle. The price for adults is 26.50 pounds ($28.75) Sunday through Friday, and 28.50 on Saturdays.
Among the early arrivals was Anne Daley, 65, from Cardiff, who got to the castle at 7:30 a.m., well ahead of the 10 a.m. opening time. She was also one of the first in line as tens of thousands of people shuffled through Westminster Hall over four days to see the queen’s lying in state before her funeral.
"The castle feels like empty, gloomy. Nobody’s living in it. You know, you’ve lost the queen, you’ve lost the duke, you lost the corgis," Daley said. "It’s like when you’ve sold your house and all the history is gone."
Queen Elizabeth II's state funeral took place Sept. 19. King Charles III, Prince Andrew, Prince Edward, Princess Anne, Prince William and Prince Harry, among other royal family members, all attended the multitude of remembrance events throughout the royal mourning period.
When she died, Queen Elizabeth was the most widely traveled British head of state and the longest-married British monarch. She had ruled for longer than any other monarch in British history, becoming a much-loved and respected figure during her decades-long reign. She reached the milestone of 70 years on the throne on Feb. 6, 2022, celebrating with the Platinum Jubilee in June to mark the occasion.
Duncan Larcombe, royal author and Fox News royal contributor, previously noted that the U.K.'s love for Her Majesty is notably one of her "biggest achievements."
"There is something quite majestic and almost mystical about the fact that the British royal family not only still exists, but they appear to still be incredibly loved and incredibly relevant to British society," he told Fox News Digital. "And no one could have really predicted that. I mean, that's possibly one of the biggest achievements for Queen Elizabeth at this stage."
Fox News Digital's Stephanie Nolasco and The Associated Press contributed to this report.