A T in the Park fans' Facebook group claims to show the shocking reality of Scotland's biggest music festival.
The three-day event came to an end yesterday with police praising the behaviour of revellers.
READ MORE: Police investigate rape of teenage girl at T in the Park campsite
However, pictures and videos have emerged on the social media site which apparently shows a less than idyllic festival.
The Tintheparktruth page, which has 17,000 followers, is filled with complaints from people who made their way to Strathallan to watch the likes of Calvin Harris and the Red Hot Chili Peppers perform.
READ MORE: Police investigate rape of teenage girl at T in the Park campsite
The Facebook account says: "Just so everyone is aware, this page isn't here for the purposes of laughing or humiliating people at T.
"It's here to raise awareness of the festival and to allow folk to be properly informed of the realities.
"If people get caught in the act on camera "oot their nut" on illegal substances, defecating in the middle of the park, or in other mortifying or compromising positions, that is a reflection on them and is not our responsibility."
READ MORE: Police investigate rape of teenage girl at T in the Park campsite
Scores of pictures on the Facebook page show music fans lying drunk in the mud.
One image even shows a VIP toilet which looks to have been smeared in human faeces.
And numerous vidoes have been taken showing bad behaviour and drunken antics throughout the festival.
Despite the apparent online carnage police say T in the Park fans were well behaved after the number of arrests dropped year-on-year.
The first full day of the festival, at Strathallan, Perthshire, was marred by the deaths of two teenagers.
However, by yesterday afternoon, police said arrests and violent crime were lower than last year, with 40 people arrested, mainly for possession of drugs and theft. And the number of music lovers who visited the hospital tent was almost half what it was at the same time last year.
A T in the Park spokeperson said: "Police Scotland and Scottish Ambulance Service have both praised the behaviour of the audience and although we’d be happier if crime levels were at 0, the fact that they have been reduced this year, is welcome.
"We’ve put a huge amount of work into the new site layout and the new traffic management plan and the feedback from fans, the local community and the multi-agency team we work with to deliver the event has been hugely positive.
"The bus station was cleared within 1.5 hours of the arena closing each night and our excellent weather contingency plans meant that traffic also flowed well in and out of car parks.
"We will as always debrief after this year’s event and look at feedback that will inform any more positive additions or changes in 2017."
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