Diameter of the Tholus II: About 1.6 miles.
Distance of the Tholus center from its elliptical satellite mound: 1.8 miles.
Outer perimeter or moat of the Tholus II is defined by contour lines on the northwest, west, southwest and southeast sides.
Center of the Tholus II is defined by a large elliptical hill correctly oriented.
Position of the Tholus apex is at the pinnacle of the hill, 200 feet high.
The inner groove or moat surrounding the Tholus I is defined by a stream and topographic contours on the northwest, west, and southwest sides, and by topographic contours on the northeast and southeast sides of the Tholus II.
The satellite mound is represented by Buchanan Hill, which is located the correct distance from the Tholus II, is the correct size (taking into consideration a slight reduction is size due to erosion), and is oriented in the same direction as the satellite mound on Mars.
The angle between the main axis of the Tholus II and the main axis of the satellite mound is 18 degrees.
A water tank (pit) is located at the top of the hill near the center or peak of the Tholus.
Northern boundary of Tholus is bracketed perfectly by Stewart airport runways, which are just outside remnant topographic relief of Tholus.
A town called Little Britain is located at southern perimeter of Tholus, while a smaller version of the Tholus is located at Silbury Hill in England.
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