i'm not quite sure where you are exactly, but try this:
  pull resp. push the 2 boulders at the very end of the ledge (where you came from). Now you should be able to proceed and climb up. Turn around .... 
 check also my walkthrough at: 
www.cyberjunkie.com/rayon) (
http://www.cyberjunkie.com/rayon)  
 [This message has been edited by rayon (edited January 08, 2000).] 
 [This message has been edited by rayon (edited January 08, 2000).]