August 4, 2023 — Eastern end of Tutuila and Aunuʻu islands in American Samoa
![Color photograph of cliffs and ocean](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/multimediaFile-3938.jpg?itok=m10rITew)
Detailed Description
The view looks south along the basalt cliffs and beaches at Tula point on the eastern end of Tutuila Island, American Samoa. Tutuila Island is a shield volcano, formed by basalt flows that are 1-1.5 million years old. The island in the background is Aunuʻu, which is a tuff cone that is part of Tutuila Island's volcano, and current geologic investigations are underway to better understand when and how it formed. USGS photo by D. Downs.
Sources/Usage
Public Domain.