What is significant about the tomb associated with Emperor Nintoku?

The tomb generally attributed to the late 4th-century Emperor Nintoku, located near present-day Osaka, is significant primarily for its immense scale and the evidence it provides regarding the power of Japan's early aristocratic society.

Key features of this burial mound include:

• Massive Dimensions: It measures nearly 1,600 feet (approximately 490–500 meters) in length and covers 80 acres (32 hectares).
• Elaborate Construction: The site is surrounded by a complex system of three moats and two greenbelts.
• Funerary Art: It is estimated that approximately 20,000 haniwa—unglazed clay sculptures in the forms of humans, animals, and houses—were placed on the surface of the mound.

The sheer size and complexity of this tomb indicate a highly organized society with rulers capable of commanding vast numbers of workers, reflecting the sociopolitical evolution of Japan toward a unified state during the Tumulus period.12