European settlement began in earnest after the abandonment of the Redcliffe settlement, and work began on the new convict settlement several miles up the Brisbane River in 1825. Within a couple years, this new settlement was growing rapidly and the number of ships entering the bay was increasing. As a result, the facilities required to service the pilot station at Amity grew, and in 1827 convicts were sent to the island to build a new causeway at Dunwich, remnants of which can still be found on the same site. Within a year the first permanent European settlement at Dunwich had been built. Due to poor weather, smuggling, and conflict with aborigines this convict out-station was difficult to sustain and was closed in 1831.