The lowest point on Earth's surface is the Challenger Deep, located in the Mariana Trench in the Western Pacific Ocean. This extreme depth reaches approximately 36,000 feet (over 10,900 meters) below sea level. The Mariana Trench itself is the deepest oceanic trench in the world and represents an area of great geological activity, with high-pressure conditions and cold temperatures. Due to its inaccessibility, the Challenger Deep remains largely unexplored, presenting unique opportunities for marine research and an understanding of extreme life forms that thrive in such harsh environments.