 The layout and style of the Song tombs resemble those found in the contemporary <unk> kingdom of the Western Xia , which also had an auxiliary burial site associated with each tomb . At the center of each burial site is a truncated pyramidal tomb , each having once been guarded by a four @-@ walled enclosure with four centered gates and four corner towers . About 100 km ( 62 mi ) from <unk> is the <unk> Tomb , which contains " elaborate <unk> in brick of Chinese timber frame construction , from door <unk> to pillars and <unk> to bracket sets , that adorn interior walls . " The <unk> Tomb has two large separate chambers with conical ceilings ; a large staircase leads down to the entrance doors of the subterranean tomb . 
