Analysis of information sources in references of the Wikipedia article "Skara Brae" in Indonesian language version.
Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands
According to Allan Burnett, historian and author of Invented In Scotland, the Neolithic settlement of Skara Brae in Orkney in fact boasted the world's first indoor toilet.
ten stone structures, The village had a drainage system and even indoor toilets.
ten stone structures, The village had a drainage system and even indoor toilets.