According to TIGHAR researchers, the sonar image shows a strong return from a narrow object roughly 22 feet long oriented southwest/northeast on the slope near the base of an underwater cliff. Shadows indicate that the object is higher on the southwest (downhill side). A lesser return extends northeastward for about 131 feet.
“What initially got our attention is that there is no other sonar return like it in the entire body of data collected,” Ric Gillespie, executive director of TIGHAR, told Discovery News.
“It is truly an anomaly, and when you’re looking for man-made objects against a natural background, anomalies are good,” he added.
Story: Rosella Lorenzi, Discovery | Photo: Tighar