Discover the Mermaids Cave in Blackheath

Mermaids Cave is a large sandstone rock overhang located in a scenic forest environment, with a small waterfall to complete the setting.

A very short walking trail, via a steep staircase with over 100 steps, leads to this cave in uniquely beautiful natural surroundings.

While the staircase is quite long and steep, this is a fairly easy, family-friendly walk, perfect for a quick Blue Mountains adventure.

Mermaids Cave Walk
Distance: 600 m return
Duration: 30 minutes
Grade: Easy (long staircase)
Dogs: On a lead
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How to Get There

Mermaids Cave is located in a quieter part of the Blue Mountains, along Megalong Road, a long and winding road that feeds into the Megalong Valley.

To get to the starting point of the walk to Mermaids Cave, turn into Megalong Road from Shipley Road in Blackheath. After approximately 1 km, you will see a parking lot on the right side of the road (see map location).

The start of the walk is on the opposite side of the road. Be careful when crossing because the parking lot is located between two bends, so passing cars won’t be able to see you.

Parking for the Mermaids Cave
Parking for the Mermaids Cave

Mermaids Cave Walk

The walking trail to Mermaids Cave is short, well-signposted, well-maintained, and easy to follow. The staircase, however, is quite steep and uneven, so if you have children with you, be sure to keep an eye on them.

Here is a map of the short walk to Mermaids Cave with the parking lot on the opposite side of the road:

Map of Mermaids Cave in Blackheath

Start of the Walk

Once you’ve parked your car, look out for the signpost on the other side of the road, which marks the start of the walking track.

Start of the Mermaids Cave Walk
Start of the Mermaids Cave Walk

The first section of the walk is a bush trail that goes slightly downhill before arriving at the first set of stairs with metal handrails.

The trail then turns around a corner and arrives at the main staircase, cut between two high sandstone cliff walls.


It’s a beautiful old staircase in quite a surreal setting, which makes you all the more curious about what to expect when you get to the cave.

The staircase is in reasonably good condition, but do watch your step, especially in wet conditions, as the steps are quite uneven sometimes.

Stairs to Mermaids Cave
Stairs to Mermaids Cave

As you get closer to the bottom of the staircase, the small amphitheatre-like valley opens up, with the Mermaids Cave and waterfall on your left.

At the bottom of the stairs, you can either turn left to go into the cave and behind the waterfall or go straight ahead and cross the creek for better views.

Mermaids Cave

The Mermaids Cave was first named in 1882 and has often been referred to as Mermaid’s Glen.

The spot is so unique that it was once used as one of the film locations for the third instalment of the Mad Max series, the Mad Max “Beyond Thunderdome” movie.

Mermaids Cave
Mermaids Cave

The waterfall is small but very pretty and unpretentious. However, we recommend visiting after a period of rainfall; otherwise, there may not be much water falling over the cave or into the small valley.

Note that the walking track continues away from the waterfall, but it seems overgrown, and we can’t vouch for it.

Mermaids Cave waterfall
Mermaids Cave waterfall

Once you’ve finished admiring the waterfall and the atmospheric scenery surrounding Mermaids Cave, retrace your steps back up the staircase and back to the car park.

If you’re keen to do another short walk, we recommend the Coachwood Glen Nature Trail. This is an easy 1 km loop trail through a rainforest landscape, including a few Pulpit Hill Creek crossings.

You can find the start of the Coachwood Glen Nature Trail approximately 2 km further south on Megalong Road.


Mermaids Cave in the Blue Mountains


Published: May 20, 2022
Updated: June 8, 2024

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AJ Mens

AJ Mens is a digital publisher based in Sydney, Australia, and the editor-in-chief of Sydney Uncovered and Blue Mountains Uncovered.

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