Dominica Boiling Lake. Dominica
The second largest boiling lake in the world, after Frying Pan Lake on New Zealand, Dominica’s natural hot tub reaches temperatures of 180–197 °F (82–92 °C) along the edges, with those numbers rising considerably in the center where all the boiling activity is concentrated. At those temperatures, swimming in its steamy waters is ill advised. Nevertheless, since there is no road leading to the lake, visitors can take an 8-mile hike through lush jungle, sulfur springs, over mountains and through gorges to view this marvel from a 100-foot cliff.
