...is the stretch of land extending southwest from mainland Alaska, U.S. It spreads for 500 miles (800 km) between the Pacific Ocean (southeast) and Bristol Bay, an arm of the Bering Sea. The volcanic Aleutian Range runs along its entire length; the majestic Pavlof Volcano, near the peninsula's southwestern edge, rises to more than 8,260 feet (2,518 metres) and is the most active volcano in the Aleutian volcanic arc. McNeil River State Game Sanctuary, reachable only by plane, is home to a large population of wild brown bears. Other wildlife preserves on the peninsula are Katmai National Park and Preserve, Aniakchak National Monument and Preserve, and Becharof, Alaska Peninsula, and Izembek national wildlife refuges. The peninsula is very sparsely populated, though there are some small fishing villages. Ref. Alaska Peninsula
. In Encyclopædia Britannica.F
rom Encyclopædia Britannica Online: article-9005365
For those with a naturalist streak, few places on earth compare with the wonders of Southwest Alaska. Brown bears amble along the hills and plains, and more than 240 bird species inhabit Alaska's Southwest region. The region's terrain ranges from a landscape of volcanoes in Katmai National Park created by the 1912 eruption of the Novarupta volcano, to the windswept Aleutian Islands that make a 1,000-mile sweep toward Asia.
Alaska Peninsula: The Alaska Peninsula extends 550 miles into the Pacific Ocean. In the west, Lake Clark National Park and Preserve offers a wilderness of seacoast, mountains, glaciers and lakes filled with trophy-sized rainbow trout. King Salmon is the gateway to the exciting Katmai National Park and Preserve, an excellent place to view brown bears. Katmai's striking landscape was created by the 1912 eruption of Novarupta Volcano. Visitors can hike the Valley of Ten Thousand Smokes independently or take a bus tour, photograph brown bears from the riverside trails, relax at a lodge or fly to other locations within the preserve to take advantage of the finest sockeye fishing in Alaska.
Aleutian Islands: Past the tip of the Alaska Peninsula, the Aleutian Islands begin their 1,000-mile sweep towards Asia. These incredible windswept islands, now the location of numerous national wildlife refuges, were the theater for a 19-day battle between Japanese and American troops in May of 1943. Unalaska was the early headquarters of the Russian American Company and center of the sea otter fur trade in the 1700s. The fishing fleet found in Dutch Harbor holds the distinction of leading the nation in quantity and value of landed catch. Visitors to the area can enjoy exploring two examples of early Russian churches as well as an array of World War II military sites that include a vast network of bunkers and pillboxes.
Bristol Bay: Bristol Bay is home to the world's largest source of red salmon. The salmon are enticed by the area's rich, freshwater spawning streams that flow into nearby rivers and bays. Many cultures meet in this land including Eskimos, Aleuts and Athabascans. Visitors can find delights in all seasonal activities - fishing in the summer, skiing in the winter and cultural events year-round. The parklands and remote sites that make up the area are accessed only by floatplane or boat. Lodges, outfitters and local airlines offer guided or unguided adventure opportunities.
Pribilof Islands: Visitors can fly from Anchorage to see the world famous wildlife colonies on St. George and St. Paul Islands in the Bering Sea. Over 240 bird species, including colorful puffins, have been seen on rocky cliffs and grassy tundra. A nesting population of 2.5 million birds makes St. George the host of the largest known sea bird colony in the Western Hemisphere. St. Paul's beaches also play host to an amazing number of fur seals.
Settled by Aleut Natives, the islands were used by Russian fur traders to harvest seal pelts. The island's many Russian churches can be found on the National Register of Historic Places.