Continuing yesterday's identification of the World's Strangest Lakes we head to the Caribbean and "Boiling Lake" in Dominica. A "fumarole" is an opening that releases gas and steam and boils existing water. Located in the Morne Trois Pitons National Park it takes hikers six hours to get there. In Trinidad we note Pitch Lake which is 250 feet deep and is filled with liquid and semisolid asphalt. Water, gas, mineral material and bitumen collect as this lake was mined for many years for asphalt. Pink lakes are located in numerous locations stretching from Lake Retba in Sonegal to Laguna Colorado in Bolivia. The mixture of red bright colors and sunlight give the lakes their name. Exploding lakes are found in Congo. Carbon dioxide eruptions in Lake Nyos in Cameroon in 1986 killed 2000 with losses to livestock at 3500. Beppu Hells in Japan is a top spot for spa goers as the combination of clay and hot water create red and blue shades also referred to as "Bells of Beppu." The final lake on our list is Tonie Sap in Cambodia.  The Asian River receives so much rainfall that it flows backwards.