Does 'On top is a broad plateau 650 metres (2,132 feet) long by 300 metres (984 feet) wide.' logically negate the premise 'On top is a lake, there aren't any plateaus there.'
On top is a broad plateau 650 metres (2,132 feet) long by 300 metres (984 feet) wide.###On top is a lake, there aren't any plateaus there.