
Throughout Japan there exist legends of the stupendous giant named
Daidara-bocchi, a character of impossible size and strength but also some amount of humor. This being was so enormous that his footprints are said to have created innumerable hollows, lakes, and ponds, and his strength is to blame for the current placement of many mountains and rivers.
1 According to one legend,
Daidara-bocchi once compared the weights of Mount Fuji and Mount Tsukuba on his scales, and when the latter fell down, its peak split in two.
2
1. source 1, source 2.
2. source 3, source 4.