3Boiling Lake, Dominica

Boiling Lake in the Caribbean island of Dominica is exactly as it sounds—it’s a constantly boiling lake. Located in Morne Trois Pitons National Park, this natural wonder is heated by volcanic activity beneath the surface.
The water temperature is so high, ranging from 80°C to 100°C (176°F to 212°F), that falling in would be fatal. Visitors can hike to the lake but are advised to stay at a safe distance to avoid the scalding steam and slippery rocks.