Snub heptaheptagonal tiling

In geometry, the snub heptaheptagonal tiling is a uniform tiling of the hyperbolic plane. It has Schläfli symbol of sr{7,7}, constructed from two regular heptagons and three equilateral triangles around every vertex.

Images
Drawn in chiral pairs, with edges missing between black triangles:
 * H2 snub 277a.pngH2 snub 277b.png

Symmetry
A double symmetry coloring can be constructed from [7,4] symmetry with only one color heptagon.
 * Uniform tiling 74-h01.png