Shaded relief can be rendered in Bryce 5 by choosing "top" from the view control menu (see illustration below).
--The illumination direction works best in top view when "Link Sun to View" is disabled in the Sky and Fog palette (click the options arrow on the lower right side of the palette).
--Resizing the Y dimension (which controls vertical exaggeration) in the Object Attributes dialog has a dramatic effect on shadow intensity and the overall appearance of three dimensionality.
--Simple gray shaded relief can be created by assigning flat gray or white color to the terrain. Look for these in the Material presets in the Edit palette under the simple and fast category.