This is the terrifying moment a dance floor caved in during a wedding party in a 15th century Tuscan monastery, sending the bride, groom and their guests tumbling 13ft. 

Video shows the wedding party, including newlyweds Paolo Mugnaini and Valeria Ybarra, both 26, dancing the night away inside the Italian venue. 

But seconds into the footage, a gaping hole is seen opening up in the floor, sending dozens of guests tumbling into the room below. 

As the dust settles, horrified partygoers can be staring down into the hole as the injured guests scream in terror while laying amongst the rubble and plaster.

Mugnaini and Ybarra spent their wedding night in hospital alongside many of their friends, with around 30 guests needing treatment. 

Guests said it felt like an as the gaping hole opened and sent guests crashing down below, with the partygoers landing in front of a fresco of the Last Supper.  

Video shows the wedding party, including newlyweds Paolo Mugnaini and Valeria Ybarra, both 26, dancing the night away inside the Italian venue

Guests said it felt like an earthquake as the gaping hole opened up and they plunged into the room below, landing amid rubble and plaster in front of a fresco of the Last Supper. Pictured: The scene

Newlyweds Paolo Mugnaini and Valeria Ybarra, both 26, (pictured together) spent their wedding night in hospital alongside many of their friends, with around 40 revellers reportedly needing medical treatment

One guest described the scene as 'apocalyptic' and said that a 'dense cloud of smoke' billowed as the floor gave way before people could be heard screaming out in pain. 

Police and firefighters rushed to the scene at the historic Convento di Giaccherino wedding venue in Pistoia on 13 January, and hospitals in the region were placed on high alert.

Now the couple have filed a complaint against the venue with local prosecutors and handed over the footage as evidence.

The incident is being investigated by the Pistoia Public Prosecutor's Office for causing injury by negligence.

Prosecutors have since closed down the building and are looking into its structural integrity.

There were no fatalities in the disaster and many of those admitted to hospital were later discharged, while six were said to be in a serious condition with non-life threatening injuries.

Most of the 200 guests at the couple's lavish wedding had left the venue when the collapse occurred.

The majority of partygoers who remained are thought to have been young friends of Mr Mugnaini and Ms Ybarra, a student from Houston, Texas.

The groom, a teacher from Florence, told La Repubblica at the time: 'We found ourselves sucked down while we were dancing. It was panic. 

'Then there was only dust and rubble, we couldn't see anything.

Next to me there was a friend of mine who fainted and was bleeding a lot'.

The couple, who were given beds next to each other in San Jacopo Hospital, added: 'We were very scared, our wedding night was spent in the emergency room.'

One onlooker said it was 'heartbreaking' to see the couple in hospital with the bride's wedding dress hung up on what should have been a happy occasion. 

The pair were later discharged from hospital after health checks, broadcaster Rai reports.

Mr Mugnaini's father, who has not been named, told local media: "It happened while people were dancing. I immediately tried to help.

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Carabinieri police Lt Col Ruben Ruggeri said: 'Luckily there was nobody underneath because a lot of very heavy material fell together with the people.' 

Tuscany's president Eugenio Giani said following the incident: 'It could have been a terrible tragedy. I wholeheartedly thank all the rescuers and medical personnel involved.' 

The families who own the convent described it as a 'tragic and unpredictable event', according to local news outlet . 

They expressed their sorrow about the incident to the families involved and added that they will cooperate with authorities in the investigation into the incident.