They did this because the goths needed somewhere to stay the Roman Empire offered to help out
Answer:
Yellowstone National Park
Explanation:
That point is located in Yellowstone National Park, about 1000 ft NW of the Old Faithful geyser, 280 ft north of the continental divide trail, and about 400 ft from the Old Faithful Basin Gift Shop.
The area is relatively flat at an elevation of about 7360 feet.
A wall stands using gravity. It is constantly being pulled down. Many also place them in ways that they dig into the ground, and almost make a socket just for the wall to be placed, using the land that is there. More and more walls are placed and eventually, they make flooring and a roof.
Hope that helped!