National Parks
National Monuments
National Historical Parks, Memorials, and Battlefields
National Recreation Areas, Seashores and Trails
Other Preserves and Protected Areas
... narrower part, and from Yezo (Japan) by the Strait of La Pérouse. Sakhalin is the largest island of the Russian Federation, being 948 km (589 miles) long, and 25 to 170 km ...