Green Lake in North Sikkim is steeped in history. As the Base Camp for the world's third highest peak, it has been the staging ground for many historic climbs and explorations. Off-limits to travellers for years, and rigidly controlled by a permit system, this trek presents a herculean challenge worth conquering. It offers an opportunity for adventure enthusiasts to persevere and find themselves standing in a vast amphitheatre of mountains in profound solitude. A highlight of the trail is the grand view of Mt. Siniolchu, regarded as the prettiest mountain of the world.