Reddit User Claims to Have Found Evidence of Mysterious Underwater Structure Off the Coast of Hawaii A Reddit user has sparked widespread interest with a recent post claiming to have discovered a mysterious underwater structure off the coast of Hawaii. According to the user, the structure appears to be man-made and has sparked theories ranging from an ancient lost city to a secret military facility. The user provided images and a video purporting to show the structure, which has been met with both skepticism and fascination from the online community. As experts weigh in on the authenticity of the discovery, the public is left wondering: what secrets might this underwater structure hold?