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The small Australian town of Helensburgh is home to one of the most
amazing places on the planet – an abandoned railway tunnel that glows an
eerie blue at night.
The Helensburgh Glow Worm Tunnel is an abandoned rail tunnel in
Helensburgh, New South Wales which has become famous both for the ghost
stories surrounding it and the glow worm colony that give it its iconic
bioluminescent blue glow. Originally known as the Metropolitan tunnel,
the 624-meter-long underground passage was inaugurated at the end of the
19th century and used to transport coal from the local mine to the
suburbs. However, it closed down a couple of decades later and remained
abandoned until the mid-90s, enough time for a colony of glow worms to
claim it for themselves…
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Opened on January 1st, 1889, the Metropolitan tunnel of Helensburgh
remained in operation until 1915, when it officially closed down. Years
of exposure to smoke and soot from the coal made the tunnel unsafe for
the trains’ crews and passengers to pass through, so the train line was
duplicated and the tunnel abandoned. One end of it was sealed off and
the entire place was turned into a reservoir for mining purposes.
Over the years, the tunnel was swallowed by debris and overgrowth, and
most people forgot it ever existed. It was only in 1995 that the
Metropolitan Colliery decided to drain the flooded tunnel, clear up the
debris in and around it and transform the site into a historical
attraction. However, they had no idea that their efforts would
ultimately result in a unique natural spectacle.
After its initial restoration, the old railway tunnel became the home of
a colony of glow worms that has since become one of the largest in all
of New South Wales. They covered the tunnel ceiling, emitting a
characteristic blue light to attract prey – invertebrates like
mosquitoes – at night. While this bioluminescence serves a very
practical purpose, it also creates a fantastic natural light show for us
humans, one that locals were quick to notice.
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The tunnel eventually became known as the Helensburgh Glow Worm Tunnel,
and people from all over Australia started making the journey to see the
natural light show for themselves. As photos and videos shot here
started going viral on platforms like Facebook and Instagram, the tunnel
became an international tourist attraction.
But while the town of Helensburgh welcomed the attention, the glow worms
did not. As is often the case, people cared more about the quality of
their photos and videos than the tunnel’s light-sensitive inhabitants,
and completely disregarded warnings not to flash lights onto the roof of
the tunnel or set off flares to make photos brighter. It didn’t take
long for the number of glow worms in the tunnel to start dwindling.
Fearing the premature demise of their extraordinary attraction, the
Helensburgh Landcare group temporarily restricted access to the
Helensburgh Glow Worm Tunnel in January of 2019 to allow the glow worms
to reproduce in peace after years of abuse.
It’s unclear whether the unique glow worm tunnel is currently open or
closed to visitors, as we couldn’t find any updated information on the
state of this amazing attraction, but if you ever get the chance to see
it in person, make sure you admire the bioluminescent spectacle quietly
and if you must take photos, do so without artificial light sources.
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