Imagine listening to an underwater recording and hearing a powerful sound with no obvious source.
The remote location encouraged speculation about possible biological or geological sources.
Similar recordings helped https://www.ekdarun.com/forum/topic/237402/76j---seguran%C3%A7a,-entretenimento-e-inova%C3%A7%C3%A3o-em-um-s%C3%B3-lugar