Science, history and sources
Documented: The enclosure was built in the 14th century. Granite blocks were laid in courses without mortar; its perimeter is about 250–252 m, and the tallest wall is about 11 m. The outer wall tapers inward. A conical tower and interior passage survive.
Scholarly reconstruction: Approximate elliptical plan, entrance placement, wall-height profile, interior low-wall alignments and visual arrangement of stone courses follow published descriptions rather than site survey coordinates.
Artistic interpretation: Trees, ground cover, soil colours, gaps in individual stones, weathering, lighting and the surrounding low hills. These are not claims about a single historical moment.
Model physics: A 1 m long symmetric trapezoidal slice: H = 11 m, B = 5.5 m, T = 3.0 m. These widths are rounded demonstrator values, not a measured cross-section at every point. Density is adjustable, and g = 9.81 m/s².
A = H(B + T)/2
W = ρgA
Mwind = pH²/2
Mgravity = WB/2
ratio = Mgravity / Mwind
e = Mwind/W
shade = H/tan(elevation)
Wind is represented by a static uniform horizontal pressure, not turbulence, earthquake loads, foundations, sliding, interlocking stones, actual openings or partial contact stresses. A ratio above one does not certify structural safety. The numeric check independently integrates 128 horizontal slices and compares their total weight with the exact trapezoid formula.
Sun angle uses an illustrative 6:00–18:00 arc (maximum 72°), not a computed historical or seasonal ephemeris.
Sources
Educational reconstruction; details marked as reconstruction are interpretive.