Speleothems are highly valuable continental archives of past climate changes. The main aim of this special issue is to bring together contributions providing new insights in speleothem research. Of special interest are the processes driving the incorporation of various proxies in speleothems including O- and C-isotopes, trace elements, fluid inclusions, Mg-isotopes and non-traditional proxies. We especially welcome contributions with focus on multi-proxy data series at very high resolution. We also encourage contributions on long-term monitoring studies, which focus on recent regional climate variability and on processes involved in speleothem formation.