In the books
In the A Song of Ice and Fire novels, Naath is a large, curving island. It is known as a land of peace where war does not exist. The people of Naath are known as Naathi, also known as the Peaceful People. As is typical of the peoples of the continent of Sothoryos, the Naathi are dark-skinned. In addition, typical Naathi features are a flat face and golden eyes.
The Naathi worship a single deity called the Lord of Harmony, who created the entire universe and everything in it. Due to their religious beliefs the Naathi refuse to harm any living thing, abstaining from violence and martial endeavors. As a result the Naathi are vegetarians, refusing to eat the flesh of animals, and their main diet is fruit. Their main recreational activity is the making of music.
Unfortunately, because of their tranquil nature, the peaceful Naathi are a favored target for slavers. They raid the island's coastal areas and take numerous captives back to nearby Slaver's Bay (to the northeast), or even to the Free Cities (to the northwest), both of which are in the continent of Essos to the north.