The Thirty-Seventh Parallel South is a circle of latitude located 37 degrees south of the Earth's equatorial plane. It runs through several countries, including Australia, New Zealand, and parts of South America. This parallel is significant in geography and is often used as a reference point for various studies, including climate and ecology. In the United States, the Thirty-Seventh Parallel South crosses through states like California and Nevada. It is notable for its diverse landscapes, ranging from deserts to mountains, and has been the subject of various explorations and scientific research, particularly in understanding regional climate patterns.