Extended Data Fig. 1: Sulfur Cave on the Puturosu Mountain (Stinky Mountain), Romania, from which Candidatus M. methanotrophicum was enriched.
From: Methanotrophy by a Mycobacterium species that dominates a cave microbial ecosystem
(a) General overview of the cave. (b) Detailed images of the cave biofilms. The dashed line in panel a marks the stable gaseous chemocline between the volcanic gases (below the chemocline) and atmospheric air (above the chemocline). The cave walls below the chemocline are yellow due to sulphur deposition (marks 2, 5, 8), whereas no such depositions are present above the chemocline (marks 1, 3, 6). Biofilms on the cave walls are only present at the chemocline interface (mark 4). Mark 7 shows the bare cave wall after biofilm sampling.
