In November 2015 test excavations conducted while investigating a sinkhole found in the area between tombs 1 and 2 uncovered remains of a stone foundation associated with the tombs. From October 2016 a series of excavations began at this location and uncovered a complex series of adjoining stone tomb foundations as well as associated ritual areas. During the 2016 excavations the foundations of some thirteen stone mound tombs were found an area about 40m by 40m. In the northern part of this area was a large stone-mounded tomb measuring about 13m per side, constructed of stones piled on a foundation of rammed earth. Other smaller tombs extend to the west, south, and east of the large tomb, all interconnected by various means. Some tombs were directly conjoined, while others were separated by a space that was subsequently filled with clay or stone. Although the upper portions of these tombs containing the burial chambers had been destroyed, a number of coffin nails and other iron fixtures were found throughout the site. Three wood-coffin tombs were found in the earthen mounds of some of the stone-mounded tombs, and two areas interpreted as ritual spaces were also found. One of these ritual spaces, a rectangular area bounded with stone embankments built to the east of and adjoined to the large tomb, yielded some 3,000 artifacts, including various fragments of pottery and lacquerware, horse jawbones, gold earrings, iron spearheads, and glass beads. The ritual area also yielded a large quantity of roof tiles, suggesting that a roofed structure once existed in the area.