Dark zones

Have you ever imagined what life is like hundreds of feet below the surface of the earth? There is no sunlight here, no green plants, and no birds. Descend to the dark zones to learn all about the world of caves. You'll need special equipment, including a helmet with a light, and some experienced companions to join you!

שנה

2001

שפה

English

סדרה

Sapphire nonfiction

הוצאה

Rigby

מהדורות

1

עמודים

32

ISBN

9780757811708

מקור הנתונים: Wikidata