Pohjaviiva
Pohjaviiva is a Finnish term that translates to " northern line" or "bottom line" depending on the context. It is often used in geographical and cartographical discussions to refer to the northernmost extent or boundary of a particular phenomenon or region. For instance, it could describe the northern limit of a specific plant species' distribution or the northernmost point of a geological formation.
In a more abstract sense, pohjaviiva can also signify the fundamental or ultimate consequence of a situation,