It was the most devastating earthquake ever recorded to have hit Japan, and the fifth most powerful earthquake in the world since modern record-keeping began in 1900. Lethal tsunami waves were triggered that reached heights of up to 40.5 metres (133 ft) and travelled up to 10 km (6 mi) inland in some areas. The earthquake moved Honshu (the main island of Japan) 2.4 m (8 ft) east and shifted the Earth on its axis by estimates of between 10 cm (4 in) and 25 cm (10 in). The authors wrote their respective accounts of how the disaster impacted on their lives and those around them. All proceeds from sales of this book will be donated to charity.