There are some steeper sections of track along Section 6 that may be unsuitable for younger or less skilled cyclists. The majority of this section of trail along the Murrumbidgee River has a difficulty rating, under the International Mountain Biking Association (IMBA) Trail Difficulty Rating System, of easy with some sections of intermediate. Intermediate trails are described under the rating system as having some steep sections of maximum 20% grade and some sections of rocky or loose tread. In these areas a good standard of fitness is required. Consider your ability and that of your group before heading out and be prepared to dismount if concerned about the trail grade.
There are also a number of locked gates within the reserve area along the Murrumbidgee River and cyclists are required to lift their bikes over the gates at these points. The number of locked gates required in this section is currently under review.
Points of interest along the section include:
Cooleman Ridge Nature Reserve
Kambah Pool and the Murrumbidgee River, Bullen Range Nature Reserve
Red Rocks Gorge
Mount Arawang Trig
Trigonometric (trig) stations like the one at the top of Mount Arawang can be found on hilltops throughout the ACT.
The characteristic white metal quadripods with black discs above were installed in the 1970s as part of the ACT Precision Zone, a national geodetic survey. The ACT Precision Zone and its associated marks have been the main surveying infrastructure for all new development in the ACT since the early 1970s.
Survey practice at the time involved setting over ground marks and reading angles to other marks using theodolites. The quadripod is a considerable advantage over other systems. Old rock cairn trigs needed to be dismantled to expose the ground mark before any angle observations could take place. The advantage of the ACT quadripod design is that it allows a surveyor to set up over a mark cited directly under the quadripod. Highly accurate, they remain a distinctive feature of the ACT's hilltops.
The Arawang trig station was established for the surveying of the Tuggeranong sewer tunnel. The trig station and Mount Arawang take their name from a homestead located nearby.
Skylarking or conducting repairs, these men are atop of the now long gone timber trig beacon at Mount Ainslie in 1925.
Credit: Unknown, Trig Station on Top of Mount Ainslie, Canberra, c.1925. From the collection of National Library of Australia. NLA: nla.pic-vn4599699..
Once the Legal Limit of Settlement
The Murrumbidgee River, with the Brindabella Range beyond, once formed a formidable barrier for travel and settlement. For a long time this was the limit of the region's pastoral settlement. The river marked the edge of the County of Murray and the boundary for legal occupation by pastoral settlement.
It was only after 1836 that settlers could legally lease land on the other side of the Murrumbidgee. Those who did had few safe places to cross the unpredictable river. Residents lobbied for a bridge to be built nearby at Red Rocks Gorge, but the site of Tharwa, further south, was chosen.
Now located within the Murrumbidgee River Corridor, the Bullen Range Nature Reserve remains a tranquil place where the beauty of Canberra's changing landscapes can be appreciated.
Local Trail Association
More Stats for Centenary Trail Section 6 – Stromlo Forest Park to Tuggeranong Town Centre mountain bike trail
Altitude change-97 ft
Altitude min1,728 ft
Altitude max2,348 ft
Altitude start1,984 ft
Altitude end1,887 ft
Distance climb7 miles
Distance down7 miles
Distance flat1 miles
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