Kulmakivi
Kulmakivi is a Finnish term meaning cornerstone or foundation stone. The word combines kulma, "corner," with kivi, "stone," and it refers to the stone placed at the corner of a building’s foundation during the early stages of construction. The kulmakivi typically serves as a reference point for aligning walls and establishing the building's origin; in many traditions it is chosen for its ceremonial and symbolic value as much as its practical purpose.
In traditional construction, the cornerstone helped mark the starting point of masonry work and sometimes bore
The term kulmakivi is also used figuratively in Finnish to denote the essential or foundational element of