Samsara is symbolised in Tibetan Buddhist iconography by the Endless knot.
Source: en:Image:EndlessKnot03d.png , Created by en:User:Rickjpelleg in Paint Shop Pro 7 for the 'Endless Knot' articles (to replace the simpler drawing EndlessKnot.png). http://en.wiktionary.org/wiki/File:EndlessKnot03d.png
Author: en:User:Rickjpelleg, first uploaded to en.wikipedia on 20:13, 28 October 2005