Which place has the lowest barometric pressure naturally found on Earth?

The lowest natural barometric pressure at Earth’s surface is found at the highest mountain summits, especially Mount Everest. At 8,848.86 meters above sea level, the air pressure is only about one-third of sea-level pressure. This extreme drop occurs because most of Earth’s atmosphere is concentrated near the surface. Low pressure means less oxygen availability, which is why climbers must acclimatize or use supplemental oxygen. Other high peaks in the Himalayas and Andes also experience very low pressure, but Everest is the best-known example.