The Bullroarer Atlas

No. PEREZDEARCE2025-002South America

Tiwanaku stone bullroarer

Bolivia · Tiwanaku archaeological complex, La Paz Department, Bolivian Altiplano (reportedly) · South America

Function not recorded Candidate only

Archaeological datec. AD 180–1100Broad site horizon; object not directly dated.
Reconstruction drawing of the oval Tiwanaku stone, based on Carlos Ostermann’s description, with paired holes near the upper edge and dashed lines across its face.
Plate I. Reconstruction drawing of the Tiwanaku stone, based on Carlos Ostermann’s description. Image source

posible zumbador de piedra

Source term: POSIBLE ZUMBADOR DE PIEDRA

zumbador de piedra (Spanish): "stone bullroarer/buzzer"; asa (Spanish): "handle," the source's own label for the lateral perforation used to hold/spin the object.

A stone object reportedly turned up at Tiwanaku, on Bolivia's altiplano, and is known today only through a drawing made from another man's description of it. Carlos Ostermann, who is the source of that description, told José Pérez de Arce that he tied a cord to a hole cut through one side of the stone, used as a handle, and spun it — and that it gave off a very high-pitched sound. The Museo de Tiwanaku is the only home named for it.

fue probado por Carlos Ostermann atando una cuerda a la perforación lateral, usada como asa, y haciéndolo girar. Emite un sonido muy agudo.

it was tested by Carlos Ostermann, who tied a cord to the lateral perforation, used as a handle, and spun it. It gives off a very high-pitched sound.

Pérez de Arce 2025, p. 1821

Particulars

Object
An oval stone object with a lateral perforation described as a handle (asa); known only through a reconstruction drawing based on Carlos Ostermann's verbal description, not a photograph. The published drawing shows a schematic oval with a small paired-hole feature near one edge labelled ASA, plus several additional edge features and dotted internal lines whose meaning (perforations, grooves, damage, decoration, or a thickness indication) is not explained by the source and should not be read beyond the caption.
Function
Reportedly tested by Carlos Ostermann, who tied a cord to the lateral perforation, used as a handle, spun the object, and obtained a very high-pitched sound.

Source

José Pérez de Arce, 'Aerófonos sin resonador, aerófonos de aire a presión,' in Instrumentos Sonoros Sudamericanos, Parte XXXVII (Valparaíso: Chimuchina Récords, 2025), pp. 1803-1831, at p. 1821, fig. 1915

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Part of The Bullroarer Atlas, companion to The Eve Theory of Consciousness.