ロス島
Ross Island is the main island of a four-island cluster in the Willamette River in Portland, Oregon, in the United States. The islands, covering a total of about , are owned mainly by Ross Island Sand and Gravel (RISG), which mined them extensively between 1926 and 2001. The other three islands are Hardtack, East, and Toe. Ross Island was named for Oregon pioneer Sherry Ross.