The study of the prehistory of Ibiza and Formentera, the two small islands that form the Pityussae sub-group within the Balearic archipelago, began a few years ago as a consequence of the discovery and excavation of the megalithic chamber tomb of a Ca Na Costa on Formentera. Before then, prehistorians were still in doubt as to whether these islands had been occupied before the Phoenician colonisation. Many sites have come to light in the last decade, allowing us to present for the first time a general survey of the prehistoric settlement of the islands. Nevertheless, many problems are still unsolved, and new excavations are needed to establish the apparently complex cultural sequence, which seems to have begun in the first half of the second millennium.
Gómez Bellard, C., & San Nicolas Pedraz, M. P. (1988). La prehistoria de Ibiza y Formentera: estado actual de la investigación. Trabajos de Prehistoria, 45(0), 201–228. https://doi.org/10.3989/tp.1988.v45.i0.610