Surface:
Lyngbya sp. occupied 75% of mats surface, forming entengled net of the robustly enveloped filaments, sometimes forming continues (solid) coverage [Mostly with 1 to 2 layers of filaments].
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 0.15 mm.
3 layer. Dark blue-green layer. With filamentous forms without scytonemin. Thickness of the layer is ~ 0.2 mm [This discontinues layer occured rarely within cross section].
4 layer. White layer, probably composed from sediments. Thickness of the layer is over 4 mm.

TOTAL THICKNESS OF THE MAT IS ~ 0.25 (0.45 in the places with layer 3) mm.

Note: In the longitudinal axis mat is not continuous (discrete).
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Species abundance depending of layer:

Species					Surface		Second layer		2mm deep
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1. Lyngbya sp.				90%		rarely	
2. Schizothrix sp.			4%		20%			10%
3. Leibleinia sp.			rarely		
4. Coleofasciculus chthonoplastes	3%		60%			70%
5. Coleofasciculus sp.			3%		rarely			10%
6. Porphyrosiphon sp.					rarely			rarely
7. Symplocastrum sp.			rarely		rarely			rarely
8. Anagnostidinema sp.			rarely					rarely
9.Trichocoleus sp.					5%
10.Spirulina tenerrima								rarely
11.Spirulina sp.			rarely		10%			rarely
12.Gloeocapsopsis sp.			rarely		5%			5%
13.Cyanosarcina sp.			rarely
14.Aphanocapsa sp.			rarely
15.Chroococcus sp. 								rarely
16.Synechoccocus sp.					rarely			rarely	
17.Johannesbaptistia pellucida				rarely
18.Johannesbaptistia sp.		rarely

TOTAL					12		11			11