Amos Frumkin  Amos Frumkin is an Israeli geologist and speleologist. Frumkin (עמוס פרומקין; born in 1953) is a professor of geology at the Hebrew University of Jerusalem. Frumkin was born in Tel Aviv, Israel, in 1953. His expertise is the geology of caves. As an active speleologist, he founded and directs the Cave Research Center of the Hebrew University in Jerusalem. Frumkin's research fields cover karst, cave morphology, environment, and sediments, as indicators of palaeoclimate, palaeohydrology, geological history, tectonics, karst aquifers and human evolution. He also studies underground ancient water supply systems. He uses earth-sciences methods, such as radiometric dating and stable isotopes, collaborating with archaeologists, biologists and karstologists around the globe. He has authored or co-authored over 100-refereed articles and seven books. Frumkin's Ph.D. thesis on "The karst system of the Mount Sedom salt diapir" focused on karst geomorphology and hydrology of this salt diapir, and its palaeoclimatic implications. This was the first karst research performed in salt. Most of Frumkin's studies are performed on karst terrains in diverse fields of research, comprising palaeoclimate, geomorphology, hydrology, palaeohydrology, geoarchaeology, human impact on the environment and ancient water systems. The research is mostly associated with underground (speleological) features studied using earth-sciences methods. He studies the underground interface between geoscience, geography, environment, and archaeology. An interdisciplinary and trans-disciplinary view of the sub-surface is achieved by wide-scale interaction and cooperation with scientists in various fields. The research has been performed mainly in Israel, complemented with research in other countries such as Jordan, United Emirates, and Bulgaria. Additional collection of data is done over the globe, resulting in a global karst geomorphology volume. Some of the research is performed in underground laboratories in which measuring equipment was installed. Within an underground laboratory in Sedom Cave, salt cave speleogenetic processes are monitored for since 1980’s. Much of the data collection is performed by graduate students. Caves are treated as living organisms, with birth (initiation, inception), complex life history involving hydrogeologic, palaeoclimatic, biologic and anthropogenic processes, culminating in cave 'death' during which the cave is obliterated by filling or erosion.