上段

Meanings

1. Noun

   upper tier; upper section; upper deck; upper row; upper step; upper grade; upper berth; top shelf
2. place of honor; place of honour
3. dais; raised part of floor
4. overhead position (of a sword in kendo, etc.)

• 直径ちょっけい23m(下段げだん)及および18m(上段じょうだん)、高たかささ5ｍの二段式の円えんぷん墳である。

  It is a two level style round burial mound, 23m diameter (lower level), 18m (higher).