Within a tract of land containing six thousand four hundred fifty acres, more or less, on the island of Hawaii in the Territory of Hawaii, located in the Hawaii National Park, created by sections 391, 393 and 394 of this title, and described as follows, to wit:
Effective September 22, 1961, the portion of the Hawaii National Park situated on the island of Hawaii, established and administered pursuant to sections 391, 393, and 394 of this title, as amended and supplemented, shall be known as the Hawaiʻi Volcanoes National Park.