Ultra-low tide makes 1km walk to island lighthouse possible

An extraordinary tidal event in North Queensland is offering a once-in-a-lifetime opportunity for people to walk 1 kilometer across the seabed to the North Head Island lighthouse.

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How many days the walk is possible depends on the tides.

The dramatic tidal variation, amplified by the new moon's gravitational pull, has receded the water to expose a path usually submerged. This year, the walk is accessible for a limited five-day window. Hundreds of people have already made the trek from Bowen, a town located about 200 kilometers north of Mackay, to reach the historic lighthouse.

Leanne Abernethy of the Bowen Tourism Association noted that while the walk is usually possible for only two days a year, its accessibility is entirely dependent on tidal conditions. She highlighted the significant economic benefit the event brings, attracting visitors who often extend their stay.

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It certainly does provide an economic boost to the town as people travel especially for the walk and often stay for a few days.

Beyond the novelty of the walk, participants like Bowen resident Trudy Starkey cherish the chance to observe marine life, including vibrant coral and starfish, in their natural habitat. The lighthouse itself, built in 1866, is one of Queensland's oldest maritime structures, decommissioned in 1985 but remaining a significant landmark.

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I love the amount of people it brings to Bowen, and people are so respectful for the starfish and coral, which is something we don't see very often.

CSIRO oceanographer Clothilde Langlais explained that the region, particularly the area from Mackay to Broad Sound strait, experiences some of the most extreme tidal ranges on Australia's east coast, with variations reaching up to 9 meters. This unique environment makes the walk possible and underscores the dynamic coastal ecosystems of the area.

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The beautiful scenery, the walk, everyone getting together … it's a good day for everyone.