Where is mercury found naturally?

Mercury is found naturally in the Earth's crust, primarily in the form of cinnabar, a red mercury sulfide mineral. It can also be found in smaller amounts in other minerals and ores, as well as in various geological formations. Additionally, mercury is released into the environment through volcanic eruptions and the weathering of rocks. In aquatic environments, it can accumulate in sediments and biological organisms, leading to environmental and health concerns.