Now in its 12th year, the ever popular festival runs until Sunday – with the promise of local talent 'at its best' and around 50 musical acts on tap.
Co-ordinator Chris 'Ozy' Chadwick said the event offered great value, something for everyone and incredible views.
'The thing with Chaos is that we put on a party that we would want to go to. I mean what more do you want with a view like this and bikes, beers and bands - it's brilliant,' he said.
'The line-up we have is amazing and in Guernsey we are so lucky to have so much talent that we can call upon.'
Music and bar until midnight tonight. The Sunday wind-down is at 10pm. On the gate, festival-goers will pay £18 for a weekend ticket, £9 for the day or just £5 for Sunday only.