Rainmaker Mountain


Rainmaker Mountain is the name of a mountain located near Pago Pago, American Samoa on Tutuila Island. Rainmaker Mountain traps rain clouds and gives Pago Pago the highest annual rainfall of any harbor. The average annual rainfall on the mountain is around 200 inches. It has a three-pronged summit. Rainmaker Mountain and its base were designated a National Natural Landmark in 1972 due to the slopes’ tropical vegetation.
Rainmaker Mountain is one of several giant volcanic mountains that created Tutuila Island. It dominates the scene from nearly every point in Pago Pago Harbor. It compromises three mountain peaks: North Pioa, South Pioa, and Sinapioa. The peaks range in elevation from 1,619-1,718 feet. The 170-acre designated landmark area occurs above the 800-feet contour line. Several endemic species are only present here and on Matafao Peak, the highest point on Tutuila.
Rainmaker Mountain, which is an important site in Samoan legends and lores, is also geologically important as an example of a volcanic plug. The upper slopes are montane rainforest and the crest is montane scrub.
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The mountain is a volcanic feature known as a trachyte plug. This means that it is a volcanic intrusion made of extrusive igneous rocks having alkali feldspar and minor mafic minerals as the main components and a fine-grained, generally porphyritic texture.
One can get a closeup view of the mountain by driving up Rainmaker Pass.
Rainmaker Hotel was a hotel at the port entrance under the mountain.