Helensburgh NSW 2508
Inside the Metropolitan Colliery
Last updated 7 July 2026
Most people driving through Helensburgh see bush and sandstone. Few realise that beneath the town — and beneath the Royal National Park — hundreds of tunnels honeycomb the earth in a pitch-dark maze worked every day by miners.
This page is about what lies underground at the Metropolitan Colliery, widely regarded as Australia’s oldest continuously operating coal mine (opened 1888). Getting underground as a visitor is far harder than touring the surface facilities — but the video below is the next best thing.
Nine Network — inside the mine
Originally broadcast on the Nine Network, this footage takes viewers below the surface at Metropolitan Colliery — the lift descent, rail travel through century-old workings, and longwall mining in action. It remains one of the best public glimpses of what working underground at Helensburgh actually looks like.
The journey underground
The colliery entrance on Parkes Street looks unassuming. The mine itself sits hidden in the valley. From the surface:
- Workers descend roughly 500 metres by high-speed lift
- A rail engine then carries crews through 100-year-old tunnels from the original mine
- Current longwall operations are about 5 km from the shaft — roughly 30 minutes by engine
- In narrower headings, crews transfer to jeeps, then walk the final distance — around an hour from surface to face in total
It is a long way from the quiet streets of Helensburgh to a crowded, dim working face where machines can cut up to fifteen tonnes of coal in thirty seconds from a high-grade seam.
Safety underground
Mining here is hard, noisy, and demanding. Coal dust fills the air around machinery. Methane and other gases must be constantly monitored — explosive or suffocating if unchecked.
Every worker and authorised visitor is equipped with:
- Helmet and battery-powered cap lamp
- Self-rescuer — chemical pellets that generate oxygen in an emergency
- Gas monitoring and strict site protocols throughout the shift
Peabody Energy operates the mine today. Community concerns about the sensitive Woronora Dam catchment setting are covered on the main Helensburgh Mine page.
Can you visit?
Underground tours — not routinely available to the public. Active longwall mining and safety requirements make underground access extremely restricted.
Ground facilities tours — have been offered during the Helensburgh Country Fair when Peabody has participated. Check with Helensburgh Lions for current fair dates. Ian Piggott filmed a 2012 ground facilities tour on this site.
Enquiries — Community hotline 1800 115 003 · Mine office (02) 4294 7200 · Peabody Metropolitan Mine
Related pages
Original post by Ian Piggott — March 2011 / April 2013. Video originally via Nine Network.