Pictures gallery from the film:   The Island at the Top of the World (1974)
 

Director: Robert Stevenson
Dir Photography: Frank V. Phillips
Production Design: Peter Ellenshaw
Art Direction: John B. Mansbridge, Walter H. Tyler , Al Roelofs
Visual effecst supervisor:  Peter Ellenshaw
Matte painting: Alan Maley
Special photographic effect: Art Cruickshank
Special effects: Danny Lee , Chuck Gaspar
 

One of Peter Ellenshaw skectches, that was latter painted on glass by Alan Maley.

The final image with the painting.