Bali may best be known for its notorious nightlife and moonlit beaches, but the region’s lush, mountainous terrain also makes it one of Southeast Asia’s most amazing outdoor playgrounds. The biggest draw for some of Bali’s bolder visitors is the opportunity to summit one of the island’s active volcanoes. Indonesia is part of the Ring of Fire, a horseshoe-shaped path along the Pacific belt where the majority of the world’s seismic unrest occurs.