The trench around the area is in good preservation. The edge of the bank is still sharply defined, as well as the two foot-banks, or entrances, which are placed exactly opposite to each other. They have no relation to the true or magnetic meridian, but are parallel to the general direction of the neck of land on which the circle is placed. The trench is twenty-nine feet in breadth, and about six in depth, and the entrances are formed by narrow earth-banks across the fosse. The surface of the inclosed area has an average inclination to the eastward. It is highest on the north-west quarter; and the extreme difference of level is estimated to be from six to seven feet. The trench has the same inclination, and therefore could never be designed to hold water. DIMENSIONS OF THE RING OF BROGAR. Radius to outer edge of fosse, 212.2 feet. Radius to inner edge of fosse, 183.2 " Radius of circle on which the stones are placed, 170.0 " Distance of pillars from edge of fosse, 13.2 " Breadth of fosse, 29.0 " Depth of fosse, average, 6.0 " Distance of columns apart, average equal to 17.8 " breadth of causeways, Highest column, 13.9 " Lowest column, 5.9 " Average height of columns, 9.0 " Broadest column, stump only remaining, 7.3 " Narrowest column, 1.6 " Average breadth, 5.0 " Average thickness, 1.0 " The neighbourhood of Stennis seems to have been consecrated ground to the ancient Orcadians. Within no great distance there are two circles of standing stones, two others all the remaining stones of which are prostrate, and four single standing stones, besides about twenty tumuli of various forms and sizes.