Glow Worm Tunnel

Deep in the New South Wales wilderness, the Glow Worm Tunnel is a magical detour that feels like stepping into another world. This abandoned railway tunnel, part of the historic Zig Zag Railway, is now home to thousands of tiny bioluminescent creatures that create a starry ceiling effect. It's a short, easy walk from the carpark, but the payoff is unforgettable — a natural light show that rivals any man-made attraction. The tunnel is damp and dark, so bring a torch, but be prepared to turn it off to see the glow worms in their full glory.

Highlights & What to See

• Glow Worm Display: The main event — walk into the tunnel, turn off your torch, and watch as the ceiling comes alive with blue-green pinpricks of light. It's a serene, almost otherworldly experience.
• Historic Railway Remnants: The tunnel is part of the former Zig Zag Railway line; look for old rails and sleepers, and imagine the steam trains that once thundered through.
• Rainforest Walk: The approach to the tunnel winds through lush temperate rainforest, with tree ferns, mossy rocks, and the sound of a nearby creek. Keep an eye out for lyrebirds and wallabies.
• Photography Opportunities: For keen photographers, a tripod and long exposure will capture the glow worms as streaks of light. The contrast of the dark tunnel and the luminous dots is stunning.
• Nearby Lookouts: A short detour from the tunnel leads to a lookout over the Grose Valley, offering panoramic views of the Blue Mountains escarpment.

Suggested Time to Spend

Allow around 1 to 1.5 hours for the entire experience. The walk from the carpark to the tunnel is about 20 minutes each way (800 metres), and you'll want at least 15–20 minutes inside the tunnel to let your eyes adjust and enjoy the glow worms. Combine this with a visit to the nearby Newnes Hotel ruins or a picnic by the Wolgan River for a half-day outing. If you're driving from Port Macquarie, factor in about 2.5 hours each way, so it's best done as part of a longer day trip or overnight stay in the Lithgow area.

Nearby Areas Worth Combining

• Lithgow — The nearest town, with historic pubs, the Zig Zag Railway (check if it's operating), and the Eskbank House Museum.
• Wollemi National Park — A vast wilderness area with deep gorges, pagoda rock formations, and the famous Wollemi Pine. Great for bushwalking and camping.
• Blue Mountains National Park — Iconic lookouts like Echo Point and the Three Sisters, plus the Scenic World attractions. About an hour's drive from the tunnel.
• Jenolan Caves — Stunning limestone caves with guided tours, about 90 minutes south. Combine glow worms underground with cave formations.
• Katoomba — The hub of the Blue Mountains, with great cafes, antique shops, and the steepest railway in the world at Scenic World.

Please check official sources for current details.