 The reason Algeria is featured three times is that the trip first cut through part of western Algeria, then later up through south, central and eastern Algeria, and finally on the return trip followed the Mediterranean coast of northern Algeria.Some of these countries are huge; for example, Algeria is four times the size of France or three times the size of Texas.The Sahara Desert is roughly the same size as the United States, and the trip covered 10,000 miles (16,000 km.)