Celtic Marker

I made a new find in the Pioneer Cemetery.  It's unlike most of the other stones there, in that it isn't a Sears Catalog monument from the late 1800's, it's not a Masonic marker, and it's neither obviously religious nor Eugene Hippy.

Well, OK; it does have a Celtic flavor to it, which sort of counts as Eugene Hippy.

Because of how the middle circle is broken up into four, I'm going to guess that this stone was sand-blasted through a template to make the design.  I like how the design is almost a finger-maze, and I like how the four- and three-fold symmetries of the spirals are working together within the overall design.

It's a cool design, and now I want to adapt it to a snub cube.