Copahue means "place that smells sulfur" in the local language Mapuche. It is situated fifteen km from Caviahue in Neuquén province, at the foot of Copahue volcano (2,917 m).

This is a volcanic region and Copahue Termas is enclosed in a gigantic amphitheatre formed by mountain walls, with an opening to the east.

It is a well known area due to its thermal baths and spa, which are open from November and until the first snow. Copahue receives the tourists who come here to enjoy its sulfurous natural water that are very much appreciated for their headling properties.