Daidarabocchi

Daidarabocchi is a giant being said to have shaped mountains, lakes, ponds, and colossal footprints across the Japanese landscape. Regional names for this figure vary—Daidara Hōshi, Deirabot­chi, Ōtarō Hōshi—and are associated with narratives of land formation: carrying Mount Fuji, treading out the Tone River, or excavating lakes and heaping soil into mountains. The figure represents a layering of ancient giant traditions and medieval period legends.

The *Hitachi-no-Kuni Fudoki* (regional gazetteer, 8th century), in its Naka District section, records that a giant left behind shell-midden remains at what is now Ōgushi Kaizuka (Mito, Ibaraki Prefecture)—a reference scholars identify as the earliest stratum of Daidarabocchi folklore. The site is now designated a historic landmark. Across the Kantō region, depressions and ponds attributed to Daidarabocchi's footprints or sitting marks are widely scattered: in Daita (Setagaya Ward, Tokyo), Oshitachi (Fuchu, Tokyo), Mount Haruna's environs (Gunma), and elsewhere in Kanagawa.

Yanagita Kunio's 1927 essay *Daidara Bō no Ashiato* ('Footprints of Daidara Bō') systematically surveyed giant legends across Japan, establishing the scholarly foundation for Daidarabocchi studies. Regional historical records, the National Institutes for the Humanities *Kaii and Yokai Tradition Database*, and scholarly compilations document the distribution of these traditions.

Regional name variants include Deirabot­chi in Suruga and Tōtōmi, Daidara Hōshi in Musashi, Dandara Hōshi in Kōzuke (Gunma), and Ōtarō Bō in Omi (Shiga). Narratives of a giant carrying Mount Fuji became widespread from the early modern period onward, often compared in scale with Mount Ibuki (Omi) and the Yatsugatake range (Kai). As a figure who shaped the land itself, Daidarabocchi shares genealogical links with Yatsumizu-Oominutsuno-Mikoto of the Izumo myth cycle of land formation.