The Kellerwald is named after the mountain ridge called the Keller, mentioned above. Where the name Keller came from is interpreted two different ways: Beginning about 1600, the woodlands were in heavy use in charcoal making for the many ironworks and copperworks that needed charcoal to fuel their furnaces, thus leading to the name Köhlerwald (charcoal maker forest), commonly pronounced Köllerwald (with an sound, rather than [ø]; this [œ] is not very different from the [ɛ] sound of Kellerwald).