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The ruins of an old (1898) brick kiln now 'submerged' in the forest which has reclaimed where once 1000 people lived.

http://www.nissanpatrol.com.au/forums/images/imported/2018/01/156.jpg

Much of what was once an extensive jetty on which a train took bricks out to waiting ships from the now ghost town of East Pillinger,Tas is now 'submerged'.
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The 'submerged' remains of an old barge used in the construction of a pump house at Lake St Clair, Tas.

http://www.nissanpatrol.com.au/forums/images/imported/2018/01/154.jpg