Liverpool’s ‘illegal rave’ scene is thriving, according to videos posted on social media.

Footage, obtained by the ECHO, shows over a hundred adults dancing in an underground room listening to electronic house music under multicoloured strobe lights.

Several partygoers sit slumped with glazed eyes next to a sign that appears to sell ‘weed’, ‘ketamine’ and even ‘viagra’.

As the camera moves through a dark cavern, it opens on to a makeshift dancefloor rammed with ravers pulsating along with every beat.

This underground illegal rave shows no sign of dwindling.

The party is accessible only by shimmying down a graffitied wall and walking through a secret tunnel.

Secrecy is key - if word got through to the police about the event, they would shut it down immediately.

Previously Merseyside Fire & Rescue service have warned that illegal raves are often a fire hazard.

Police and ambulance services have warned people to stay away from illegal drugs and to keep hydrated at any music event.

Because of the dangers, the UK’s rave scene was ruled illegal by the 1994 Criminal Justice Act: any open-air gathering of more than 100 people playing “a succession of repetitive beats” should expect to be shut down.

Tis video, reportedly filmed on the outskirts of the city centre in the past few weeks, highlights how today’s clandestine parties are organised by professionals.

The bunker is kitted out with sound and lighting systems that would not seem out of place in Liverpool’s classiest nightclubs.

One raver, who didn’t want to be named, told the ECHO: “They have increased massively in production value.”

According to the 26-year-old, ravers normally pay a £10 entry fee and can expect to cough up £5 for a can of beer.

He added: “But you have to understand the cost that goes into these things.

“A lot of it is DIY. The people that run these raves commit a lot of their lives to it.

“It’s a lifestyle choice for the organisers. For many, the only income they get is through these events.”

Merseyside Police were approached for a comment.