Land of Whirlpools

The is where Kushina Uzumaki originates from. It no longer exists, having been destroyed and the rest of the survivors scattered across the globe. The surname Uzumaki was very common in this country. It was located on a island next to the Land of Fire, which was later called the Land of Waves.

Uzushiogakure
was the shinobi village of the Land of Whirlpools. It was well known for their fūinjutsu to the point that it led to its destruction in war, and was close allies with the Land of Fire's Konohagakure Village; the First Hokage's wife, whom originated from this village, was the first jinchūriki of the Nine-Tailed Demon Fox. The people of the Land of Whirlpools were noted to have notoriously long lives, so it gained the title "the village of longevity". The village no longer exists - it's people scattered across the globe. It's village symbol is worn to this day by Konoha shinobi on their backs.

Due to the strong tie between the Land of Whirlpools and Konohagakure, all chūnin and jōnin vests of Konoha shinobi bare the crest of the Land of Whirlpools, symbolising the strong friendship that resided between both villages.

Trivia

 * "Uzumaki" means "spiral" or "whirlpool".
 * According to Kushina, the Four Symbols Seal was based on the fūinjutsu of this village.