ftp://ftp.di.uminho.pt/pub/ctan/graphics/metapost/contrib/macros/m3D/  direct

[DIR]manual/  direct  1000+ twin directories
[DIR]gallery/  direct  850+ twin directories
[DIR]trials/  direct  76 twin directories
1.31 KB  2006-01-10README  55 mirrors
[DIR]mpinputs/  direct  95 twin directories