Jawaban:

The first collector of Proto-Historic objects such as bronze axes  

and kettle drums who described and portrayed these objects was  

G. E. Rumphius. He published his findings in 1703. 6 It struck him  

that the bronze axes had the appearance of human tools, but he could  

not free himself of the belief prevalent in Indonesia and elsewhere that  

these metal objects (and also the stone axes of the Neolithic) were  

thunderbolts. He even tried to give a scientific explanation, by assuming  

that the objects owed their existence to metallic vapours which became  

concentrated in the clouds by lightning, and were there condensed  

into objects in the shape of a tooth. The hole in the axe, and its sharp  

edge, he attributed to the action of the strong wind which always  

accompanies a thunderstorm.

Penjelasan:

bersumber dari buku :

The Bronze-Iron Age of Indonesia

by H.R. van Heekeren

https://archive.org/details/BronzeIronAgeOfIndonesia