Name: The Great Stalacpipe Organ: actuated by electricity. It creates the sound of a mallet hitting stalactites hence its name. A type of lithophone.

Wikipedia(https://en.wikipedia.org/wiki/The_Great_Stalacpipe_Organ)

Wikidata: Q7737953

Invented by: Leland W. Sprinkle in 1956

links: http://www.oddmusic.com/gallery/om25450.html, https://www.wikidata.org/wiki/Q7737953, https://en.wikipedia.org/wiki/The_Great_Stalacpipe_Organ

Disambiguation: electrically actuated lithophone

Description: Organ that hits stalactites with a mallet producing a sound you can hear throughout the cave