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Time 40 mins
Circuit 1.7 km Circuit
Climb 58 m
Grade 2 Easy track
Bus Car
no_pets
This walk explores the bushy interior section of Nielsen Park. On this walk, you will visit historic Greycliffe House and the Steele Point Gun Emplacement. The walk climbs over the Mount Trefle summit. At just over 40m above sea level, I suspect most walkers will not consider it much of a mountain, but an enjoyable walk all the same. Most of this walk follows concrete and sealed paths, and there are some great harbour views on the second half of this walk.

(0km) Greycliffe Ave Car Park → Nielsen Park Cafe

distance 200 m time 3 mins climb 0m descent -7m Very easy
From the lower end of the car park on Greycliffe Ave, this walk heads around the gate and along the sealed path (driveway) towards the water, passing the 'Sydney Harbour National Park' sign[1]. After ≈50m, the path leads to a four-way intersection just past the garbage bins.
Continue straight: From the intersection, this walk heads towards the water following the wide path[2]. The path soon bends left (near the toilet block, on the right[3]) and heads behind the beach, past the large information sign[4]. Soon the path heads over the 'Dressing Pavilion' tunnel[5] and, ≈50m later, comes to the front of the Nielsen Park Cafe[6] with it's great water views[7].

Shark Bay

Shark Bay
Located at the northern end of Nielsen Park, this beach faces north across Sydney Harbour. The sandy beach offers a swimming net enclosure[8], public toilets[9][10] and change rooms[11], showers[12] and is a popular place for people to simply relax. The beach is a focal point of Nielsen Park and also boasts a cafe[13]. Protected by the harbour, there is no surf at this beach. The beach is not patrolled. This is a lovely spot, with natural shade not far from the beach.

Nielsen Park Cafe

Nielsen Park Cafe
Open 8-5 daily, this historic cafe offers inside seating and a range of meals, including breakfast, sandwiches and hot food. This is one of a number of buildings in Nielsen Park which are available for functions. For further enquiries, contact 9337 1574. More info.

(0km) Nielsen Park Cafe → Western end of Shark Bay

distance 90 m time 1 mins climb 1m descent 0m Very easy
Continue straight: From Nielsen Park Cafe, this walk heads the short distance along the path in front of the cafe and behind the beach (keeping the water to your right)[14]. The path heads past the 'William Albert Notting'[15] and 'Niels R.W. Nielsen, MLA'[16] memorial[17] (on your left) to soon find a four-way intersection (at the base of some steps) at the eastern end of Shark Bay[18].

(0km) Western end of Shark Bay → Greycliffe House

distance 90 m time 3 mins climb 13m descent 0m Easy track
Turn sharp left: From the intersection, this walk heads directly away from the water[19] and up the path then steps[20], towards the grand building on top of the hill (not following the 'Hermitage Forest Walking track' sign[21]). The path heads past the sandstone toilet block[22] (on your right) and then at the top of the hill, the path bends to the right, in front of the 'Greycliffe House' information sign[23], coming to the driveway and a four-way intersection, in front of Greycliffe House[24].

Greycliffe House

Greycliffe House
Greycliffe House was completed in 1851 by John Reeve, son-in-law to the explorer W C Wentworth. The house was unoccupied between 1898 and 1911, when it was taken over by the State Government and used as a baby hospital and Tresillian mothercraft home in to the 1930s. Many of the plantings are from this era. Today, the building is home to the Sydney Harbour South office of the NSW National Parks and Wildlife Service, and is one of few remaining examples of gothic architecture in Sydney. More info.

(0km) Greycliffe House → NP Workshop driveway

distance 540 m time 12 mins climb 30m descent -12m Easy track
Continue straight: From in front of Greycliffe House, this walk follows the 'Vaucluse Rd Via Mt Trefle' sign[26] up the steps. The track soon bends left and heads high past Greycliffe House and a 'Surviving the City' information sign[27]. The track then gently winds through the bush over Mt Trefle (the high point, but not very high), coming to a 'Greycliffe House' sign[28] pointing back along the track, just near the back of the fenced workshop. Here the walk continues to generally follow the fence around the NP workshop. Heading along the side of the workshop, there is a view of some houses on Vaucluse Rd. At the front of the workshop, this walk turns left to follow the driveway down to find a 'T' intersection with a wider road (driveway).

(1km) NP Workshop driveway → Steele Point int

distance 430 m time 9 mins climb 7m descent -23m Very easy
Turn right: From the intersection, this walk heads west along the road (driveway) towards the water, keeping the fence and grassy clearing on your left[29]. After ≈30m, the walk leads over a speed bump[30] as the road bends right. The road passes a large clearing (on the left) with harbour views[31], then about halfway through the next grove of trees[32], the road comes to a signposted intersection marked with a gap in the fence (down the hill on your left)[33].
Continue straight: From the intersection, this walk heads north-west along the road as it continues to bend right[34], soon passing a clearing and a filtered view of the harbour on your left[35]. The road then leads through a grove of trees for just over 100m, coming to another clearing and great view of Sydney Harbour[36]. The walk continues along the road for another ≈140m to find an intersection marked with a large 'Hermitage Foreshore Walk' sign (at the top of a set of stairs, on your left).

Steele Point Cottage

Steele Point Cottage
Why not make a weekend of it? Built in 1880, this one-time gunners' barracks has been restored as a one bedroom getaway. Managed by NPWS, you can hire this cottage (found on Steele Point) from $330 per night (two night min). Great for a romantic weekend away for two. More info.

(1km) Steele Point int → Degaussing range

distance 30 m time 1 mins climb 0m descent -4m Very easy
Continue straight: From the intersection, this walk heads along the road a short distance, keeping 'Steele Point Cottage'[37] to your left. As the road bends sharply to the right, the walk then comes to an intersection just past the fenced degaussing range, near a sign pointing to 'Greycliffe House'[38].

Degaussing range

Degaussing range
This degaussing range, found at Steele Point, was constructed in 1960 and is still operated by the Royal Australian Navy today. Degaussing is the process of removing (or at least reducing) a magnetic field. This degaussing range services four areas in the harbour (about 500m from the building), where metal ships passing over will be automatically de-magnetised. Why? Mostly to prevent the triggering of seabed mines. More info.

(1km) Degaussing range → Steele Point Gun Emplacement

distance 50 m time 1 mins climb 0m descent -7m Easy track
Turn left: From the intersection, this walk heads up the driveway, keeping the degaussing range fence just to your left[42]. At the end of the driveway, the walk heads across the grass[43] to find the Steele Point Gun Emplacement[44] just behind the degaussing range. Beware of the unfenced drop into the emplacement[45]. At the end of this side trip, retrace your steps back to the main walk then Turn sharp left.

Steele Point Gun Emplacement

Steele Point Gun Emplacement
Construction of this initial emplacement took about three years and was completed in 1874. The sandstone pit once had a steel dome (to protect from shells) and was part of a series of gun emplacements protecting from the threat of invasion. Today, you will find a series of tall sandstone channels[47] and the circular pit where the main gun once stood[48]. A set of un-railed steps leads into the pit - please take care in the area, as the pit is not fenced.

(1km) Degaussing range → Greycliffe Ave Car Park

distance 350 m time 6 mins climb 7m descent -12m Easy track
Veer left: From the degaussing range[49], this walk heads down the footpath and steps, towards the beach[50]. The path leads past an open grassy clearing (on your right) and ignores a path (on the right, leading to the toilet). At the bottom of the stairs, the path comes to a four-way intersection at the western end of Shark Bay.
Continue straight: From the intersection, this walk follows the flat, wide path, keeping the beach and water to the left. The path soon passes the 'William Albert Notting'[51] and 'Niels R.W. Nielsen, MLA'[52] memorial[53] (on your right) and, not much further along, comes to the front of Nielsen Park Cafe[54].
Continue straight: From Nielsen Park Cafe, this walk heads along the path, keeping the beach and water to your left. After ≈50m, the path heads over the 'Dressing Pavilion' tunnel[55] and soon passes a large information sign[56]. At the sign, the path bends right and then comes to a four-way intersection near a large number of garbage bins[57].
Continue straight: From the intersection, this walk follows the wide sealed path (driveway) directly away from the water, past the garbage bins. The path soon leads past the 'Sydney Harbour National Park' sign[58] and through the gate to Greycliff Ave.

Maps for the Mt Trefle walk

You can download the PDF for this walk to print a map.
These maps below cover the walk and the wider area around the walk, they are worth carrying for safety reasons.

Sydney Heads1:25 000 Map Series91302N SYDNEY HEADSNSW-91302N
Sydney1:100 000 Map Series9130 SYDNEY9130

Cross sectional view of the Mt Trefle bushwalking track

Terrain profile for Mt Trefle

Analysis and summary of the altitude variation on the Mt Trefle

Altitude analysis for Mt Trefle

Overview of this walks grade – based on the AS 2156.1 – 2001

Under this standard, a walk is graded based on the most difficult section of the walk.

Length1.7 km
Time40 mins
.




Grade 2/6



Easy track
AS 2156.1GradientGentle hills with occasional steps (2/6)
Quality of trackClear and well formed track or trail (2/6)
SignsClearly signposted (1/6)
Experience RequiredNo experience required (1/6)
WeatherWeather generally has little impact on safety (1/6)
InfrastructureGenerally useful facilities (such as fenced cliffs and seats) (1/6)

Some more details of this walks Grading

Here is a bit more details explaining grading looking at sections of the walk

Gradient

Around 1km of this walk is flat with no steps, whilst the remaining 700m has gentle hills with occasional steps.

Quality of track

Around 1.2km of this walk follows a smooth and hardened path, whilst the remaining 540m follows a clear and well formed track or trail.

Signs

This whole walk, 1.7km is clearly signposted.

Experience Required

This whole walk, 1.7km requires no previous bushwalking experience.

weather

This whole walk, 1.7km is not usually affected by severe weather events (that would unexpectedly impact safety and navigation).

Infrastructure

This whole walk, 1.7km is close to useful facilities (such as fenced cliffs and seats).

Similar walks

A list of walks that share part of the track with the Mt Trefle walk.

Other Nearby walks

A list of walks that start near the Mt Trefle walk.

Plan your trip to and from the walk here

The Mt Trefle walk starts and ends at the Greycliffe Ave Car Park (gps: -33.850846, 151.26857)

Weather Forecast

This walk starts in the Metropolitan weather district.

Current Alerts

Park Information

Sydney Harbour National Park

One of Sydney's most diverse parks, Sydney Harbour National Park is formed from 11 pockets of harbour islands and shoreline. Highlights include coastal walks and swimming, breath-taking viewpoints, tours of colonial buildings and Aboriginal cave art.

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