The name Twyfelfontein refers to the spring itself, to the valley containing the spring, and in the context of traveling and tourism also to a greater area containing nearby tourist attractions: the rock engravings, the Organ Pipes, Burnt Mountain, Doros crater, and the Petrified Forest.
Genocide Organ | pipe organ | Hammond organ | Pump organ | Daniel Pipes | Organ transplantation | Wanamaker Organ | Pipe organ | Allen Organ Company | United Network for Organ Sharing | Uilleann pipes | PIPES | pipes | Hammond Organ | The Organ | sex organ | Richard Pipes | Organ Transplantation | Organ stop | Organ donation | Organ console | North Tonawanda Barrel Organ Factory | Gerry Organ | Border pipes | Barton Organ Company | American Theatre Organ Society | William Hill (organ builder) | Wicks Organ Company | Vomeronasal organ | uilleann pipes |
Among his innovations in the field of organ design was a kind of electro-pneumatic action, the Diaphone and the modern Tibia Clausa with its strong 8′ flute tone.
Ewald Kienle found the solution to the emittance problem by using the resonating bodies of the organ pipes for the sound emittance, while avoiding the usual complexities of airflow stimulation in the organ pipes.