
Geologically, the cave is a formation that developed in endokars limestone alternating with sandy limestone. These limestone rocks are thought to originate from the middle Miocene period, or about 15 million years ago. Karst region in NTT, the karst region as elsewhere in Indonesia, also has special features different from other karst region.
Liang Bua and other caves have been excavated in archaeological sekawasan since the 1930s. The findings from this period was brought to Leiden, Netherlands. Excavation and research was continued by the HR leadership team van Heekeren in the 1950s, then continued by Th. Verhoeven, a Catholic priest. His team found, among others, the framework is very short (but not dwarf) in the Liang Toge, in addition to the bones in Liang Bua, Liang Momer, and others. framework, this framework is H. sapiens. The next researcher who conducted the study there are AA Sukadana, physical anthropologist from the University of Airlangga, in the 1960's also found human remains, including the lower jaw, in Liang Bua. From 1978-1989, Prof.. R. Panji Soejono femur found among others in the Liang Bua. Skeletal remains from the early period up to the last stored in Leiden, London, Yogyakarta, Jakarta, Surabaya, and Flores. Subsequent research was stopped because there is no funding. New research continues after the existing cooperation between Arkenas Research Center (led by RP Soejono) and the University of New England, Australia (led by Mike Morwood).
In September 2003 found a unique skeleton later identified as H. floresiensis. Along with early human stone tools found are known to have been used by Homo erectus (as found in Sangiran) and bone remains Stegodon (ancient elephant) dwarf, giant monitor lizards, and rats.