Decorative pseudo-Celtic design of three figure-8 knots along a closed triangular loop.  For an alternative version, see File:Three-figure8-knot_triang2.svg.
Self-made graphic, generated from the following vector PostScript source-code:

%!
306 396 translate .64 dup scale 90 rotate/z{20000 sqrt}def/A{.92 .96
1 setrgbcolor 13 setlinewidth -172.4251 87.0054 moveto z 50 sub 64
112 240 330 arc 126.0617 100 100 330 0 arc -50 0 100 90 270 arc
126.0617 -100 100 0 30 arc z 50 sub -64 112 30 120 arc -172.4251
-87.0054 lineto gsave 0 setgray 33 setlinewidth stroke grestore
stroke 0 setgray 33 setlinewidth -50 0 100 130 150 arc stroke z 50
sub -64 112 45 30 arcn 6 dup 3 sqrt mul neg rlineto stroke -172.4251
87.0054 moveto 75 neg dup 3 sqrt mul neg exch rmoveto 25 neg dup 3
sqrt mul neg exch rlineto stroke -172.4251 -87.0054 moveto 18 dup 3
sqrt mul exch rmoveto 17 dup 3 sqrt mul exch rlineto stroke .92 .96
1 setrgbcolor 13 setlinewidth -50 0 100 129 151 arc stroke z 50 sub
-64 112 46 30 arcn 7 dup 3 sqrt mul neg rlineto stroke -172.4251
87.0054 moveto 74 neg dup 3 sqrt mul neg exch rmoveto 27 neg dup 3
sqrt mul neg exch rlineto stroke -172.4251 -87.0054 moveto 17 dup 3
sqrt mul exch rmoveto 19 dup 3 sqrt mul exch rlineto stroke}def
gsave 210 0 translate A grestore gsave 120 rotate 210 0 translate A
grestore gsave 240 rotate 210 0 translate A grestore showpage
%EOF
AnonMoos