Organ Pipes National Park, Keilor

4.1
The Organ Pipes National Park, abbreviated as OPNP, is a national park located in the Central region of Victoria, Australia. The 121ha protected area was established with the focus on conservation of the native flora and fauna, and preservation of the geological features in the Jacksons Creek, a part of the valley, north-west of Melbourne. It is situated in a deep gorge in the grassy, basalt Keilor plains.Within Organ Pipes National Park, the valley walls of Jacksons Creek expose Pleistocene volcanic rocks of the New Volcanic Group. These 2.5 to 2.8 million year-old basalt lavas, commonly known as "trap rock," fractured during cooling into vertically standing, hexagonal basalt columns. These columns are locally known as the "organ pipes" for which this park is named. Over the last one to two million years, the slow cutting by Jackson Creek of its valley down into the basaltic plains and through the underlying trap rock exposed these geological structures. The bottom of the valley of Jackson Creek also exposes a prehistoric buried creek valley, which is cut into 400 million year-old (Silurian) mudstones and sandstones. The bottom of this buried valley contains ancient creek gravel. Both the ancient river valley and the Silurian sedimentary rock lies buried beneath the basaltic volcanic rocks of the New Volcanic Group. Marine fossils that are found in the Silurian sedimentary rocks demonstrate that they accumulated beneath a prehistoric ocean.
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Organ Pipes National Park Reviews
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4.1
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  • The Organ Pipes Park is a small, nice spot to visit. The walks are super easy, mainly on flat surfaces. The Organ Pipes rock formation is interesting but the other two features at the park are very av...  more »
  • Visit the Australian bush almost on the doorstep to the city! Every family in Melbourne should make the short trip to this amazing setting. The kids loved making up stories about the rock formations, ...  more »
  • A nice little walk down the hill, along the creek and back with good signage describing the forces which created the rock formations. (interesting how we travel around the world to look at interesting...  more »
Google
  • Three interesting rock formations to look at, although you can't get up close enough to touch two of them due to the river. It doesn't take long to walk from the car park round all three sites, only an hour. So if you allow time to stop for photos, rest and snacks you can easily get it all done in half a day. A good trip for parents with kids wanting to do something outdoors and a little more active than screen time!
  • A great place to visit for a couple of hours, not too far from Melbourne. Geology fans will love the rock formations, including the organ pipes cliff-face and tessellated pavement formation. Just be ready for a very steep walk back up the hill to the car park!
  • Interesting rock formations beside Jacksons creek Entry off the Calder Highway opposite the Calder Park raceway Free parking toilets and picnic tables Recommend good shoes as the walk from carpark to the creek is down a very steep bitumen road. Pets not allowed due to wildlife
  • Really nice walk. No dogs allowed though :( a few things to see
  • Wonderful nature. Odd opening hours (gates close 16:30)

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