Sao Miguel Island is a Portuguese island located in the Azores archipelago in the North Atlantic Ocean. It is the largest and most populous island of the nine islands that make up the Azores. The island is known for its volcanic landscape, hot springs, and beautiful beaches. The capital city of Sao Miguel is Ponta Delgada. The island is also home to the only tea plantation in Europe. The answer to the crossword puzzle is SAO, which stands for the Portuguese name for the island, São Miguel.