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. 2019 Aug 8;14(8):e0220706. doi: 10.1371/journal.pone.0220706

Fig 2. Field pictures of the most representative biofilms and deposits observed in Fetida Cave.

Fig 2

A) Water filaments attached to the rock in the cave stream close to the entrance (named F-stream samples); B) Water filaments floating in the water in the inner zone of the cave (named F-float samples); C) Water biofilms sedimented on the water stream bed in the inner zone of the cave (named F-sed samples); D) Gypsum moonmilk deposits on the cave walls and ceilings (named M samples). It is surrounded by hard whitish gypsum crusts; E-F) Grey (named V-grey samples) and brown (named V-brown samples) vermiculations covering the cave walls and ceiling.