Here is part 43 of my walkthrough of Crystalis for the NES.

It goes from the point where the hero enters the Sahara Cave up to the point where the hero takes a stairway in the Upper Levels of the Pyramid.

Areas explored in this video:

Death Desert: The Sahara Cave, Death Desert, the Pyramid Basement, and the Upper Levels of the Pyramid.

What you'll find in this video:

-The hero using the Bow of Moon to destroy the Statue of Moon.
-The hero using the Bow of Sun to destroy the Statue of Sun.
-The hero getting an Opel Statue from a treasure chest.