The Sweat Lodge
In Lakota, the Sweat Lodge is called an Inipi, meaning Rodk Lodge. It is a purification ceremony and one of their Seven Sacred Rites.
Inipi is an ancient rite and ceremony that has passed down from generation to generation in the Lakota nation.
Lakotas and other Native American nations are sensitive to keeping their traditions pure. Because of that the full ceremony is never given to non-Lakotas. However, there has been such demand for access to Native American spiritual traditions that a close version is allowed to be given to non-Native Americans. The details of the Inipi can differ from Nation to Nation or even from one event to another. Much depends on who is leading the Sweat.
The "Lodge" is a sacred ceremony for purification of body, mind, and spirit through the heated stones, water (steam) and sacred space. The Lodge is a metaphor for Mother Earth's womb. She receives and gives unconditional love.
There is a firepit, altar, and the lodge itself. These are in a line to connect "The There," known as the Path of Spirit. The Fire Pit, where the stones are heated is male energy and outside the lodge.
As the fire is lit, you set your intention for the ceremony through prayers that honor and call upon the Great Spirit and the spirits of the four directions.