Witness
Fly-tippers have dumped a mountain of waste in a field in Oxfordshire.
The "environmental crisis occurring in public view" is around 150m (490ft) in length and 6m (20ft) tall.
The enormous heap has been discovered in a plot of land adjacent to the River Cherwell near Kidlington.
Elected official raised the issue in parliament, stating it was "threatening an environmental disaster".
Protection organization said the illegal garbage pile was created approximately a few weeks back by an organised crime group.
"This is an environmental crisis taking place in plain sight.
"Daily that goes by raises the danger of hazardous run-off getting into the aquatic network, contaminating animals and endangering the wellbeing of the whole watershed.
"Environmental authorities must respond now, not in extended periods, which is their usual response period."
Legal prohibition had been established by the environmental authorities.
It is hard to identify any specific bits of rubbish as it looks to have been broken up with soil combined.
Part of the rubbish from the peak of the heap has fallen and is now just five meters from the river.
The River Cherwell is a feeder stream of the River Thames, which signifies it runs through Oxford before meeting the Thames.
Parliament TV
The MP asked the government for help to clear the illegal site before it triggered a fire or was carried into the aquatic system.
Speaking to parliament members on Thursday, he declared: "Illegal operators have deposited a massive amount of unauthorized synthetic materials... totaling substantial weight, in my electoral area on a water-adjacent land alongside the River Cherwell.
"Water heights are growing and thermal imaging demonstrate that the rubbish is also increasing in temperature, increasing the threat of blaze.
"The Environment Agency reported it has inadequate capabilities for regulation, that the projected cost of removal is greater than the whole twelve-month allocation of the local district council."
Cabinet member said the government had assumed responsibility for a struggling recycling sector that had created an "epidemic of unlawful waste disposal".
She advised representatives the agency had implemented a restriction order to stop more entry to the area.
In a statement, the organization stated it was examining the situation and requested for information.
It said: "We understand the public's frustration about occurrences like this, which is why we intervene against those accountable for waste crime."
A recent report found efforts to tackle major environmental offenses have been "extremely overlooked" notwithstanding the situation growing more extensive and more sophisticated.
A parliamentary committee recommended an independent "comprehensive" inquiry into how "widespread" waste crime is dealt with.