On the island of Trinidad, near the village of La Brea, is a small but quite unusual lake Pitch Lake. It has an area of 40 ha, depth - 80 m. This reservoir can be considered unique, not similar to any other lake in the world, because it is not filled with clear water, and semi-black mass. This bitumen - natural asphalt. Hundreds of tons of bitumen annually scooped out of the lake, but its level is not reduced, because there is a constant natural recharge.