This book is the result of a 10 years research and it's so, so good! We follow the vikings from Scandinavia and England to the Ukraine and further to the Near and Middle East. We learn about trade and its impact, and also about River QUEENS. It's a well structured book and if you're familiar with reading non-fiction it's also easy to read. With the newest technologies we learn more and more about the past, but a lot we will also never know.