2018 Heritage Assessment of House at Kalkari in Ku-ring-gai National Park Cottage constructed c. 1950 to accommodate staff at the goal Sanctuary in Ku-ring-gai Chase National Park. [Sue Rosen] ArchitecturalSocial HistorySydney - NorthernHeritage AssessmentResearchHistory Authors: Dr Sue Rosen and Liz Gorman Client: NSWNPWS The house in the grounds of Kalkari in Ku-ring-gai national Park was once part of the koala sanctuart that operated fronm the 1950s until the mid 1970s.