Largest hydrocarbon lake in Titan's southern hemisphere, near the poles, roughly the size and shape of Lake Ontario and shaped somewhat like a footprint. The lake is extremely shallow by Earth standards, only 0.5-3 meters thick, which were shown to rise and fall with the seasons. It is also extremely flat, with waves rising no more than a dime's width, indicating virtually non-existant winds at the time of the measurements. The first observed well developed river delta flows into it. Ethane has been identified in the lake.