Nightfall (Mac) - Macintosh

You are an eminent archaeologist exploring an Egyptian tomb for signs of a wonderful secret. Suddenly an earthquake hits the area. You are stunned by rocks and blackout. When you wake up you are trapped, the entrance covered with rocks. Do you wait to be rescued, and risk more aftershocks, or gather up your notes and find another way out? Has anyone been this way before you, and who or what lies in the chambers beyond?