This fractal started with Jim Muth's FOTD for April 28, 1999. I added the central 32 arm interleaved spiral to the image by zooming in on a spiral in the original. I tried many color palettes before settling on this one with the sqrt mapping. It was hard to find a coloring scheme that didn't break up the long arms of the central spiral. If you continue to zoom deeper down the center of the spiral you will see the number of arms repeatedly double until you reach the minibrot at the center. Here is a link to an image: http://dl.dropbox.com/u/33642054/image/down_the_drain_640_5.jpg The parameter file used to make the image: Down_the_Drain { ; Exported from Fracton. ; time = 26 min 48 sec at 640 x 480 with no aa ; on a Mac Pro 2 x 2.8 Ghz Quad-Core Xeon ; by Mike Frazier, public domain reset=2004 type=mandel passes=1 float=y center-mag=0.2510741463378246509490302634487064524\ 58685130735208872490198850774986748159870717220750\ 85801942767767307/0.563759715033491421452401420767\ 15267715765961288320347597715980467217970405679051\ 286432019075377948720496/1.33333335e+92/1/46/0 params=0/0/0/0/0/0/0/0/0/0 maxiter=50000 inside=0 logmap=-23131 colors=pH6rH5vH3zH0vH2rG3mE2hD2cB2ZA2U81P71K51F41A\ 30510000330760BA1ED1IG1LJ1PN2SQ2WT2_W2b_3fb3ie3mh3\ ql4tq3wu1zz0ww1tt2pp3mm5jj6gg7cc8``9YYAXVBURBROBOK\ BLHBJDBGABD6CA3C80CC4CHH8MJ9RLBWNC`PEeSFkWInZHqaHt\ cGwfGziFwfFtdFqaEnZEkWEhUEeREaODZMDWJDTGDQDCNBCK8C\ 413000443775BB8EFAIIDLMFPQISUKWXNZ`PbdSegUikXloZpr\ asvcsvcsvcsvcqsaoq`mnZlkXjiWhfUfdTdaRbZP`XO_UMYRKW\ PJUMHVKGWJGXHFYGFZEF_DEaBEbAEd9Dg9Cj8Bl8Ao89r78u77\ r67p67n68l68i59g59e59c5A`5BZ6CW7EU8FR8GP9IMAJKBLMC\ IOFKQHNSKPUNSWQUYSX_VZ`Y`b`cdcfffihiljlolornrulprk\ mnikkgihffdddabbZa`W_YSYWPWUMVRITPFRNCQK8OI5RK7TN9\ WPBYRD`TFbWHeYJg_LiaNkcPneRpgTsiVulYxn_zpawn`tk_pi\ YmfXjdWgaVcZT`WSYURVRQROPOLOKJNHGMDDLAAKADMAGNAIPA\ LQAOSARUBUWBXYB__CbaCecChfCkhDnjDqlDtnCqlBmjBjiAfg\ 9cf8_d8Xc6SY5NS4IM3EH29B145000311632943D54G75J87MA\ 8QB9TCAWEBZFCbHEfHBjH9nH7 } -- Mike Frazier www.fracton.org