The La Brea Tar Pits are a famous natural site located in Los Angeles, California. They consist of sticky tar that has seeped up from the ground for thousands of years. This tar has trapped many animals, preserving their bones and providing valuable insights into prehistoric life. The site is part of the La Brea Tar Pits and Museum, where visitors can see active tar pits and learn about the fossils found there. Excavations have uncovered remains of creatures like mammoths, saber-toothed cats, and ground sloths, making it an important location for studying the Ice Age.