Drying or desiccation of dead bodies after death is known as mummification. Certain conditions are required for body to undergo the process of mummification. A dead body lying in middle of desert is a good example of conditions favorable to undergo this process.
Dry conditions with breeze flowing over the body will evaporate the body fluid and transport it to distant places. Mummified bodies are dry and leathery in consistency. Mummification preserves the external features. Facial recognition may be possible in many cases.
Thin individuals usually are more liable to undergo mummification in the above-mentioned environment or micro-environment as their body will cool and desiccate quickly amounting to less water reserve.