I who am a contributor drew the picture by a software which developed by myself.
The survey map which I referred to depends on "「第Ⅳ章 河田山1号墳の発掘」『金沢大学考古学研究会活動報告 第4号』金沢大学考古学研究会(1986年)".
This is a drawing of present situation (not a drawing of a restored mound).
The drawing depends on combination of wire frame and height eight phases classification. Parallel projection.