Surface:
Lyngbya sp. occupied 75% of mats surface, forming entengled net of the robustly enveloped filaments, sometimes forming continues (solid) coverage.
Cross section:
1 layer. Surface layer is thin, ~ 0.1 mm, composed mostly from Lyngbya sp.
2 layer. First white layer. Thickness of the layer is 0.5 mm.
3 layer. Dark blue-green layer. With filamentous forms without scytonemin. Thickness of the layer is ~ 1.3 mm [This discontinues layer occured rarely within cross section].
4 layer. Second white layer. Thickness of the layer is ~ 0.1 mm.
5 layer. White layer, probably composed from sediments. Thickness of the layer is over 4 mm.

TOTAL THICKNESS OF THE MAT IS ~ 2 mm.

Note: In the longitudinal axis mat is not continuous (discrete).
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