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The Big Hole walking track

Deua National Park

Overview

It’s an adventurous walk from Berlang campground to the viewing platform at The Big Hole as long as you don’t mind getting your feet wet crossing Shoalhaven River along the way.

Where
Deua National Park
Distance
3.5km return
Time suggested
1hr 30min - 2hrs 30min
Grade
Grade 4
Price
Free
Please note
  • The weather can be extreme and unpredictable, so please ensure you are well prepared for your visit.
  • Remember to take your binoculars if you want to birdwatch.

In 1862, a young man called Boxall used four long saplings, a rope and a candle to explore a deep chasm out in the bushland of southeast NSW. The rubbly bottom he eventually landed on was 96m from the surface. Onlookers were all shaking their heads at his reckless behaviour but also itching to know what he’d found down there inside what is now known as The Big Hole.

Thought to be around 400 million years in the making, this is an extraordinary limestone marvel; a roofless cave which is over 100m deep and 50m wide. It can be reached by walking from Berlang campground, wading across Shoalhaven River, then continuing through dry eucalypt forest and unique nana heath, with expansive views of the park on your journey. The vast open chasm can be viewed from the lookout and, if you’re there in the early morning or late afternoon, you may see its resident lyrebird come out from its ferny grotto to feed. For a more challenging hike, carry on to Marble Arch or return to Shoalhaven River for a picnic and a swim.

For directions, safety and practical information, see visitor info

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Edward River canoe and kayak trail, Murray Valley National Park. Photo: David Finnegan.

Conservation program:

Saving our Species conservation program

Saving our Species is a innovative conservation program in NSW. It aims to halt and reverse the growing numbers of Australian animals and plants facing extinction. This program aims to secure as many threatened species that can be secured in the wild as possible, for the next 100 years. 

Mountain pygmy possum (Burramys parvus). Photo: Cate Aitken

Park info

See more visitor info
The Big Hole walking track hero, Deua National Park. Photo: Lucas Boyd