Under normal circumstances, a corpse in a natural environment will decompose rapidly due to the combined action of enzymes from the body's own cells, external bacteria, and bacteria from the intestines.
In a relatively short period of time, the flesh and skin rot away, decompose, and are consumed until only a skeleton remains.
However, in extreme natural environmental conditions, situations such as mummification or freezing of a corpse can also occur.
Mummies formed under natural conditions have very high environmental requirements.
Usually, in desert areas with high temperature, dryness, and excellent ventilation, natural mummies can form. Most mummies discovered domestically are found in places like Lop Nur.
In extremely cold, high-altitude areas, corpses can freeze. For instance, climbers who fail to summit Mount Everest and die leave their bodies permanently on the mountain.
