Its 305-metre (1,001 ft) summit, the highest in Lau, is a massive truncated pyramid bounded on all sides by almost perpendicular cliffs up to 200 feet (61 m) in height.
At its base there is in most places a wide belt of gently sloping land, standing not more than 25 feet (7.6 m) above sea level, and forming the brim of the hat suggesting the island's profile.
The precipitous sides of the central mass are scored by three shallow terraces, marking pauses in the uplift of the island; but these are not readily observed, being smothered under the dense vegetation that clothes the whole towering structure.
Its distinctive size and hat-like shape is recognizable from over thirty-five miles (56 km) away, including from nearby islands such as Kaibu, Yacata, and Vanua Balavu.
In Yadrana, Lakeba, the Turaga Vaka family have one of their elderly matriarch named after Sakulawe, as a token of respect to one of their late blood relatives and a chief of Vuna: Ratu Masiwini; Masiwini is the great-grandfather of current Fiji National Provident Fund CEO Aisake Taito, married to the daughter of Ratu Sir Kamisese Mara.