FOREWORD is book reports on the ten years long collaboration of theSlovene Karst Research Institute ZRC SAZU at Postojna with the Institute of Geology, Academy of Sciences of the Czech Republic at Praha (Prof. Pavel Bosak). e last institution has taken 2007 samples of sediments in the 21 profiles of the Slovene Dinaric and Alpine karst and determined their palaeomagnetism and magnetostratigraphy. e oldest sample found in them with the age from about 1.8 to more than 5.4 Ma indicated the surprising age of a cave near the Adriatic seashore. is is the time of the upper Miocene! Toward NE of the Slovene Dinaric Karst this age is diminishing but is still 0.78 Ma in the Postojnska jama. In one of the three researched high Alpine caves in the northern Slovenia this age is between 1.2 and 5.0 Ma.e study proved that the cave sediments represent a good tool for the reconstruction of the landscape evolution and tectonic regime in different karst regions. In collaboration with the team from Bohemia, the Slovene scientists added the results of research in many natural sciences on the Slovene caves and karst regions, already published or not yet published in the Slovenian and in the foreign literature. is is why this monograph on the Slovene karst caves and Slovene karst gives many new information. e famous French speleologist E. Martel in his book Les Abîmes in the year 1894 confirms the reputation of the Slovene Dinaric region Kras (Karst) by naming it "the classical karst" as here investigations of hydrology and caves started. e present book has repeated this reputation.Research in the Slovene caves contributed also to the improvement of the techniques of sampling for high resolution approach of fine cave sediments with dense sample spacing.e book is therefore important also for technology of sampling and for applying the palaeomagnetism and magnetostratigraphy for the karst sediments.