Robuta

https://www.usgs.gov/publications/geography-and-geology-alaska-a-summary-existing-knowledge-a-section-climate-and-a The geography and geology of Alaska; a summary of existing knowledge, with a section on climate,... Alaska, the largest outlying possession of the United States, is that great land mass forming the northwestern extremity of the North American continent, whose... geology of alaskageographysummaryexistingknowledge