H3 was a 1x2 meter rectangular pit discovered 1.2 meters below the surface. It was 2.15 – 2.5 meters deep, and had foot-holes dug into both eastern and western walls for entry and exit. The lower one-third of the pit (0.8m) contained 1583 turtle shells and cattle bones and was covered with three layers of fill.

The shells and bones in the pit had been carefully deposited and were neatly arranged in layers. Most of the bones were laid flat and stacked one on top of the other. The inscribed ones seem to have been consciously placed with their verso and non-inscribed sides facing upward in order to protect the writing on their recto sides. Shells were also arranged vertically and placed upright on one side to wall-in the others. The shells used to create this boundary were non-inscribed.

The majority of the cracked bones from H3 and the inscribed divination accounts on them can be linked together in integral divination sets that lead to reconstructed timelines spanning periods of weeks and month ...[producing] the most unified and diachronically succinct 'week-at-a-glance' account of daily life in early China.

Schwartz, The Oracle Bone Inscriptions from Huayuanzhuang East, 2019