A study published in the Quaternary International discovers for the first time that stalagmites from the Goikoetxe Cave (Busturia, Bizkaia) are environmental record keepers. The stalagmites and stalactites in Spain are not just the typical white, many ranges from honey to deep red. The study indicates that these structures, known commonly as speleothems, get their red color from organic compounds drained from the soil and carried by water. However, Scientists suggest that evaluating the incorporation of other elements, such as organic matter, may also be of interest in interpreting and reconstructing the climate during speleothem growth.