More strange features found on the ocean floor in the Sea of China. Mysterious lines that run for hundreds of miles are found all over the planet, Some of these pathways are about 5 to 7 miles wide and lead to interesting areas of the ocean floor.
There are also anomalies that look like to entrance to an underwater cave.
There are many unexplained features found on the ocean floor.
What could they be? Are they natural or made by an unknown and undiscovered civilization?