**Very early warnings** In 2005, NBRO carried out [a survey in the area](http://www.nbro.gov.lk/web/index.php?option=com_content&view=article&id=283%3Aa-devastating-landslide-had-occurred-in-koslanda-estate&catid=44%3Anews-a-events&Itemid=204&lang=en) after a smaller landslide hit.