Looks interesting. This is the sort of thing that Musgrave might find useful, since Mojoworld could really benefit from fractally drawn weathering effects. Ordinary fractal landscapes scale nicely but unfortunately don't look natural except for a narrow class of terrain. Ray ----- Original Message ----- From: "Timothy D. Lenz" <tlenz@xxxxxxxxxx> To: <leveller@xxxxxxxxxxxxx> Sent: Friday, September 12, 2003 3:45 PM Subject: [leveller] Rivers > Was out poking around and found this. Somthing about a at to simulate > rivers. > > http://online.itp.ucsb.edu/online/colloq/bardeen1/oh/01.html > > >