Under Antarctica, a hidden river 460 kilometers long was discovered.

A river buried under Antarctica that is longer than the Thames has been found, and its existence may be hastening the melting of ice as the temperature warms.

The ice movement and melting are both affected by the 460-kilometer river.

The study team discovered contrary to what was previously thought, there is an active water flow near the foot of the ice sheet.

Because of the constant movement of the water, it is more sensitive to variations in temperature.