Fig. 1From: The microbiota characterizing huge carbonatic moonmilk structures and its correlation with preserved organic matter(A) Cave map showing the sampling sites for microbiology and biogeochemistry analyses (1, 2, 3) as well as the sites in which the detectors were located for CO2 (NC dots), temperature (NTH dots), and radon (NR dots) monitoring. (B) Picture inside Grotta Nera showing the outstanding moonmilk structures characterizing the cave (Picture courtesy of UPIX – Fotografia ipogea). (C) Representative pictures of the different samples that were collected and studied. From the left: the moonmilk structure, the apical part of the moonmilk, the bedrock, and the water bodyBack to article page