Pu o Hiro (which means Hiro's Trumpet) is a stone on Easter Island that was used as a musical instrument by the ancient Rapa Nui.[1][2] It is also known as Maea Puhi ("stone to blow" or "wind stone").[1][3] When blown through its main hole, it would produce a sound that resembled a trumpet.[1] It was used to invoke Hiro, the deity of rain.[1][4]