Was reading a bit more about it and saw Meoni's video on the overiew of 5.1 and he brought up another possible suggestion.

He was suggesting this could be an area in Amaurot that could tie in to Emet-Selch's history since Yoshi and Oda discussed going more into that for the upcoming patches. I wasn't sure if it was going to be the case considering our screenshots have us with Chai's and it seems more like a part of Eulmore but who knows.