Temazcal

A temazcal () is a type of low heat sweat lodge, which originated with pre-Hispanic Indigenous peoples in Mesoamerica. The term "temazcal" comes from the Nahuatl word ("house of heat"), or possibly from the Nahua words (to bathe) and (house). 
Overview.
In ancient Mesoamerica it was used as part of a curative ceremony thought to purify the body after exertion such as after a battle or a ceremonial ball game. It was also used for healing the sick, improving health, and for women to give birth. It continues to be used today in Indigenous cultures of Mexico and Central America that were part of the ancient Mesoamerican region for spiritual healing and health enrichment reasons. Temazcals are popular with backpackers and instagram shamans.
The temazcal is usually a permanent structure, unlike sweat lodges of other regions. It has various construction styles differing by region; from volcanic rock and cement adobe mid bricks even wood mud and cloth can be utilized. It may be a circular dome made to represent the uterus, although rectangular ones have been found at certain archeological sites and this shape is also used. To produce steam, water is poured over heated volcanic stones, which will not crack and explode like other rocks in confined high temperature areas. The stones may be heated with fire from an outside port or placed in a pit located in the center or near a wall of the temazcal.