Kumogakure

Kumogakure (雲隠れの里, Kumogakure no Sato; Literally meaning
"Village Hidden in the Clouds") is the Hidden Village of the Land of
Lightning. As one of the five Great Ninja Villages, Kumogakure has a
Kage as its leader, known as the Raikage. The ninja from this village
seem to specialize in Lightning Release techniques. They also seem to
favor the use of Japanese-style swords (or katanas) as standard
weapons, instead of the typical kunai that most shinobi wield; and, as
a result, most Kumogakure ninjas seem to excel at swordsmanship. The
village is located on a high mountain, and is literally hidden in the
clouds. The Raikage lives in a large building built into the tallest
mountain.