""Giants, Civilizations And Submerged Continents Traced In History"" is a book written by Helena Petrovna Blavatsky, a Russian philosopher and occultist. The book explores the idea of ancient civilizations and lost continents that have been submerged under water. Blavatsky suggests that these civilizations were inhabited by giants and other mythical creatures, and that they possessed advanced technologies and knowledge that have been lost to time...