http://www.yellowpages.com.au/sa/mt-barker/australian-paving-centre-12790424-listing.html Australian Paving Centre located in Mt Barker is an excellent choice if you are looking for retaining walls construction or building retaining walls. To learn more call 1800 200 200, visit us at 2 - 4 Oborn Rd, Mt Barker, SA, 5251 or check the url above.