Boyd Alexander, a British officer, further explored the lake, which then contained few stretches of open water.
From this point a large area of open water was seen which was believed to be an "open Polar Sea," a chimera which played an important and delusive role in subsequent explorations.
The greatest extent of open water is about 60 m.
Unlike many of this summer's blockbusters who have relied on mega stars to lure the audiences, Open Water stars relatively unknown actors.
An iron footbridge crosses the upper end of the lake, offering views down the entire length of the open water.