The Brisbane City Council have spent the past two years secretly buying bushland the size of more than 400 Suncorp Stadiums.

Brisbane taxpayers have been spending 30 million dollars a year to fund the council’s ambition to secure 10 years worth of bushland, equalling 750 hectares, in just four years.

Brisbane Lord Mayor Graham Quirk says the council didn’t make the purchase plans public until the purchase had been made.