https://www.intellihub.com/advanced-super-secret-three-quarter-mile-tall-wall-like-structure-spans-more-than-ten-thousand-miles-of-seafloor/
I find this hard to believe.
It looks like a data or mapping error, Google Earth is full of those when they try to convert height data into 3d models.
Also, as that "wall" is along the 180ยบ meridian, I suppose it's a result of overlapping (or failing to join) the two sides of the height map when they applied it to the Earth's model.
Thanks. I suspected it was something unreal.