Fjord

A fjord is a long, narrow, deep inlet formed when glaciers carved valleys that later flooded with seawater. Characterized by steep cliffs and depths reaching hundreds of meters, fjords create dramatic coastal landscapes.

Norway has the most developed fjords, with much of its coastline composed of them. Sognefjord (204km long, 1,308m deep) is among the worlds largest. Fjords also exist in New Zealand South Island (Milford Sound), southern Chile (Patagonia), western Canada, Greenland, and Iceland.

Has fjords most likely means Norway. Fjords + Southern Hemisphere narrows to New Zealand or Chile. Fjords are high-latitude glacial features, so tropical countries can be eliminated.