Video: G-Land Diaries

The south coast of Java faces the Indian Ocean, so it is exposed to large swells generated by low pressure systems circling Antarctica, many thousands of kilometers to the south. G-Land is situated on the eastern side of the Bay of Grajagan, so it has a westerly aspect; i.e. at right angles to the predominant swell direction. As a result, swell wraps around the point and into the eastern side of the bay, producing long, walling left-handers, which peel at a rapid rate along a half kilometer stretch of shallow coral reef, forming perfectly hollow tubes that remain open the whole way.