This step pyramid, 31.58 by 31.58 meters square and 12.4 meters high, is located at Ziban, now in China. It fronts on the KukNae castle (Ziban) to the westsouth, and 12 stone plates, the largest one of them measures 2.7m long and 4.5m high, leaned against the first step. There was four guardian stones, looks like a dolmen on the step, but survived just one which you can see below. It is called 'Paechong', means guardian tomb in korean. What a strange post looks like a sphinx in Egypt.

It was guessed having constructed in Kokuryo period, maybe before A.D. 500, but nobody know whose tomb. It was once known a stone tomb of the great Kwangkaeto, but now a destroyed stone pyramid, nearby the stone monument of the great Kwangkaeto, should be of the great, and so this pyramid might be a tomb of king Zangsu. 'Zangkunchong' means a tomb of general in korean.

By the last discovery, new fact that the head part of stone coffins in the inner chamber put towards Chonzi (crator lake) on Paektusan (Mt. PaekTu), to the northeast, is unearthed.

***coffins and ceiling in the inner chamber (below) ***