Pitch Lake, La Brea, Trinidad

Microbial life exists in the lake. The researchers indicated that extremophiles inhabited the asphalt lake in populations ranging between 106 to 107 cells/gram.
Pitch Lake is one of several natural asphalt lakes in the world. The La Brea Tar Pits (Los Angeles), McKittrick Tar Pits (McKittrick) and Carpinteria Tar Pits (Carpinteria) are all in the US state of California. Lake Guanoco is in the Republic of Venezuela.