The northeastern wall, starting here, runs at first in a southeasterly direction, but turns southward, gradually approaching the southwestern wall, to which, at the end of about 3 1/4 miles, it is joined by a short wall, facing nearly South, rather more than half a mile long. | The northeastern wall, starting here, runs at first in a southeasterly direction, but turns southward, gradually approaching the southwestern wall, to which, at the end of about 3 1/4 miles, it is joined by a short wall, facing nearly South, rather more than half a mile long. |