Palaeomagnetic measurements on sediments from Petralona cave, Greece, indicate a stable, single component remanence of normal polarity. Redeposition experiments established the ability of the sediments to acquire the direction of the geomagnetic field. Magnetic properties and Moessbauer spectra of sediments and magnetic concentrates show that magnetite, which is slightly non-stoichiometric, and hematite are present in the sediments from the cave. The magnetite dominates the magnetic properties and exhibits pseudosingle domain behavior. Using estimated deposition rates for the sediments in the cave, and the fact that Uranium-Thorium and electron spin resonance dates which can be stratigraphically correlated to the palaeomagnetic section range from 200 to 750 ka, implies that the section represents a time span of about 150-180 ka within the Brunhes epoch. From this, the age of a human cranium found in the cave 25 years ago is estimated to be not older than 620 ka. -- AATA