The Kamchatka Peninsula is part of the Eastern frontier of Russia. Due to its close proximity to the United States, the region has played a strategic role in the defense of Russian territory throughout modern history. As a result, the territory was closed for many years to foreigners and Russians alike. Fortunately, the region's isolated position played a significant role in preserving and protecting its unique wilderness and rich biodiversity. With few roads, most regional transportation is by plane, boat, or helicopter. Kamchatka is a spectacular, lavish landscape dotted with fuming volcanoes (150, of which 29 are active), fast-running rivers, and a wilderness that is inhabited by the largest brown bear population (10,300) in the world. The largest eagle in the world, the Steller's Sea Eagle (approximately 4,500 in number), is also found in the region. Kamchatka is poised to become one of the most exciting sport-fishing destinations in the world, with an estimated third of the world's Pacific salmon population.