The natural hot springs of Amnéville-les-Thermes which come from a depth of 900 m reach the Earth's surface at a temperature of 41°C. Well-known for its painrelieving and anti-inflammatory effects, the ferruginous waters of the St Eloy spa have made it an exemplary establishment. The waters are used to treat rheumatism and the aftereffects of osteo-articular injuries as well as respiratory complaints.