Fig. 1: The Middle Paleolithic site of El Salt (Spain).
From: Components of a Neanderthal gut microbiome recovered from fecal sediments from El Salt

a, b General site setting. The yellow star marks the location of the excavated area. As can be seen in the photograph, the sedimentary deposit rests against a tall limestone wall. c, d Different views of the excavation area indicating the zones sampled for this study. Zone 1 includes samples V1-3 and Zone 2 all the rest.