Robby Ko King Tjoen


July 5, 2022

Dr. Robby Ko King Tjoen (January 4, 1936 – June 20, 2022) was the second son of Ko Khoen Gwan, a tobacco trader, veteran of the Indonesian independence struggle and production director and shareholder of the "Ko Kwat Ie" Magelang citronella factory. He graduated from elementary and junior high school in Semarang (Dominico Savio), Santo Aloysius High School in Bandung, Faculty of Medicine, University of Indonesia 1962, and Skin Disease Specialist FKUI 1966. Robby Ko King Tjoen died on June 20, 2022 in Bogor.

Curriculum Vitae

Since junior high school, he has been fond of hiking and has done photographic documentation and simple research in biology and geology, following in the footsteps of Dr. Franz Junghuhn, who in the 18th century explored almost all the mountains on the island of Java.


In 1966, Robby started working as a dermatologist and gynecologist. He also briefly worked as a civil servant lecturer at FK UI, but resigned in 1973. Apart from opening a dermatologist practice, he is also active in cave and karst exploration and has become known as an expert in this field. Since 1973, he has started exploring caves, starting with Sripit Cave in Trenggalek, East Java. The limestone environment is also studied through karstology. Because in Indonesia the two sciences are not yet known and have not been practiced, he pioneered through research, consultation, scientific lectures, and holding various scientific meetings through the Indonesian Speleological Activity Association (HIKESPI). He was self-taught in both sciences by conducting data collection, research, field visits, scientific meetings, and attending short courses in speleology-karstology and cave exploration in the United States, Belgium, Italy, Czech Republic, France, and the United Kingdom. In 1983, he was chosen as the official representative of the Union Internationale de Speleologie (UIS) for Indonesia. From 1986-2000 he was elected adjunct secretary of UIS for the Australia-Asia Region. In 1983 he was elected as General Chair of the Indonesian Speleological Activity Association, which was founded on May 23, 1983 in Cilacap by 7 cave exploration enthusiasts.

Academic work

He has written more than 100 papers in the fields of biospeleology, conservation, speleogenesis, cave tourism management, karst hydrology, archeo-paleontology, sedimentology, speleology education, cave exploration techniques, karst area management, karst vegetation, so he is recognized as an expert and resource person. source of karst and cave problems by various government agencies, universities, as well as IUCN and the World Bank. He was once asked to be a guest teacher at the Bandung Tourism Education and Training Center (ex NHI) for a course in Cave Tourism Management and Special Interest (1986-1989), the Faculty of Forestry, IPB for a course in Karst Forest Conservation (1987-1989), and the Postgraduate School. Bachelor of IPB in Ecotourism course (2000). In fact, he is also a supervising lecturer for undergraduate, postgraduate, and doctoral students at IPB, ITB, and UI in the fields of Cave Tourism, Karst Conservation, Karst Hydrology, Sociology of Karst Areas, Legal Aspects of Karst Areas, although he only studied these sciences in detail. self-taught.


Natural Conservation Expert Course, PUSDIKLAT HUTAN, Department of Forestry, in the course of Conservation Karst area flora and fauna (1988-2001). Lecturer at the UNPAD Ecology Sheet in the course of Conservation of Karst and Goa Areas (1989) Lecturer in Nature Tourism and Ecotourism Management at the Department of Tourism, FISIP UI and author of NATURAL TOURISM OBJECTS. Supervisor for S1, S2, S3 in the fields of Cave Tourism, Karst Conservation, Karst Hydrology, Sociology Karst area, Legal aspect of Karst area for students of IPB, ITB, UI.


IUCN-Chyroptera Specialist Group-Species Survival Committee since 1989. WCPA-since 2001. Federation Francaise de Speleologie (FFS), British Cave Research Association (BCRA) Undergound Labora