Mysteries RV Project:

Target #4g: The viewer should explore and describe the point of origin that triggered, and thus initiated, the event or process that resulted in the target to be located at the bottom of the ocean, as shown in the image below. The target time should be the time that best reveals the cause and nature of the event or process.

Image Credit: Google Earth
Latitude: -71.685035°
Longitude: -77.261423°