nozurazumi; dry stone castle wall construction
A traditional Japanese castle wall building technique using uncut, natural stones stacked without mortar. The term is specific to historical architecture and castle studies.
The stone walls of this castle are built using the nozurazumi method.
Nozurazumi is a construction method in which natural stones are stacked as they are.
A more advanced technique using precisely cut stones for tight joints, contrasting with the rustic, natural appearance of 野面積み.
Standard kanji spelling for this castle wall construction term.
Abbreviated spelling; the full form 野面積み is more common.
The term combines 野面 (のづら, 'natural rock surface') and 積み (づみ, 'stacking'), referring to the use of uncut stones in wall construction. The exact historical origin of the term is uncertain, but it is a well-established technical term in Japanese castle architecture.