A Finnish sauna is a traditional dry heat bath originating from Finland, characterized by high temperatures ranging from 60°C to 100°C (140°F to 212°F) and low humidity levels. The heat is typically generated by a stove, known as a 'kiuas,' which heats a pile of stones. Bathers can adjust the humidity by ladling water onto these hot stones, producing a burst of steam called 'löyly.' This practice creates a unique thermal environment that promotes intense sweating and relaxation.