There are, in fact, 65 billion cubic meters of methane, in other words the equivalent of 50 million tonnes of petrol lying at the bottom of the lake under 250m of water.
Ёсць, на самай справе, 65 мільярдаў кубаметраў метану, іншымі словамі эквівалент 50 million tonnes of petrol&nbsp;lying at the bottom of the lake under 250 м вады.