A little research reveals - Audaciously Embedded (in spite of my better judgement) by Alison Davies..... Made of recycled fabric including shirts and boxer shorts. Machine pieced, hand quilted. Amazing!!
This is inspiring because its so beautiful but also so easy. And contains fun geometry! A winning combination of ingredients. I could always do this pattern to make escher cubes. Yes! In denim! Yes yes!
I think each hex triangle starts out with 2 different rectangles, sewed corner to corner (like HST), then trimmed to a 60 degree triangle - still working on figuring this out, but website has some clues