Picture Taken:- 12th August 2015, cofferdam construction using coral stone for temporary structure to build sea wall. This Rotterdam is made of coral stone and cement mortar. #coralwalls #cofferdamconstruction #coffer_dam #sea_wall #marine_construction #marineconstruction #dipakvarsani #dipak_varsani #mad_about_construction #madaboutconstruction (at Zanzibar, Tanzania) https://www.instagram.com/p/B3ye3UZp4ac/?igshid=o3ccnxhffmyk














