A pseudo-octonionic Mandelbrot set (a 'MandelBulb') -tridimensional cross-section- [Un ensemble de Mandelbrot dans l'ensemble des pseudo-octonions (un 'MandelBulb') -section tridimensionnelle-].
See this pseudo-octonionic Mandelbrot set:
See a close-up set with an increasing zoom ratio from left to right (possibly including this one):