Frontal view of the portal stone at Sanfins.
As with North American and Irish sweatlodges,
the heated chamber can only be entered by
crawling through the low entrance.

 

Another sauna stone from Briteiros, northern Portugal

 

 

Reconstruction of one of the ritual saunas at Briteiros,
showing the outer cool chamber, the richly carved portal stone, and the inner sweathouse connected to a stone furnace. At upper left, a spring-fed source pipes in water.

Alto das Eiras, Famalicão, Portugal