Wow! This looks really chaotic!
Isn't there a game like "Guess which formula I used" in the forums? For this one I would say you mixed a quadratic mandlbulb with something like the mandelbox. Is it remotely possible?
Honestly, I'm setting up a new computer (old one died) and just found the image on an old back up external drive
I'll see if I can find the parameters...
Found 'em!
No box or unfolded bulb involved either, just Lambda4Dnc. OctahedronIFS, and Folding Int Pow
Mandelbulb3Dv18{
f.....w....o0...w....2....kLwl1Tropnz0XzEM9aIL/ES/Ws5xArqzvedtS3NV7TzyHOnxXQ14xD
................................8zPXJZIrS.2........Y./.........E........y.2...wD
...Uz6/........./M.0/.....Up....W/....E2LQPosQOnzXiQW9nD/..........m/dkpXm1.....
./....kD12../..........wz.................................U0.....y1...sD...../..
.w1...sDu4qoON7MtvfVP8IsmqgAzuPr.Hf9zRijPKAbDnxaIwfEvzYH9VYwy2zcplbpV6njmrQY6bI4
mw1MAt3BoYGxye4imqLTbHljU.....oH/.............kD.2....sD..kz0...................
.............oAnAt1...sD....zw1..............................................k1.
.....Sxckz1.......kz.wzzz1.U..6.P....61...EB....U0...w.....F....8/...I1.....St52
...U.0aZczDM6/nzMg2czX6dE16.0c..zrhe..UoK/nl2xvj6sM93P58iz1...........U.8.UQgk0.
.wUmc2beYz1.dA8E5Exwz0........../6U0.wzzz1...........s/...................E.0c..
zzzz.............0...................2U.8.kzzzD............8....................
/6U0.wzzz1...................................UTVR..y3q/yzz/k.1A..1Ak.vzDsnwF.UDn
5VTzThdht0kaqaPiQs5y3q/.sLM5s1bTsLM5.UTVRUDlyVTVR..y3q/yMw5y3q/.sLM5snqTsLM5.UTV
RUDkzVTVR..y3q/y...y3q/bzz/k.1Akyz1yATomxzpaqaff................................
E....AU.F3E.....I....E.....HVpaMY34B2tqM.IaQ....................................
...........GVf53iSIwz...........................................................
................................................................................
.....................2.....3....8....woMo34OZFaQjtKG4B3.........................
.....MU/4MU/4..................E........kz1.....................................
................................................................................
................................0....M....k.....4x4PYZaPb/GGiF56ExqR............
..........U0.U............................2GVf53iSIwzWIsuFVf53zD................
................................................................................
............................................}