An area of NW Bohemia near the border with Germany, known as the Czech Auvergne, contains small basaltic volcanoes of Miocene-to-Pleistocene age and world-renowned hot springs (Ager, 1980). Two cinder cones and a maar are found in the Cheb Basin area of the western Eger RIft; the Cheb Basin is an area of carbon dioxide dominated surface degassing in mofettes and mineral springs and active seismicity.