This paper examines carbonized crops retrieved from three prehistoric subterranean pits. The crop remains were recovered in the 14th excavation of the Songguk-ri site, Buyeo, Korea. Although it is commonly assumed that subterranean pits of the Bronze age was used for food storage, archaeobotanical examination of these features has rarely been carried out. The current investigation reveals that pits contained carbonized remains of rice, foxtail millet, broomcorn millet, soybean, and adzuki bean. It therefore supports the hypothesis that the pits were used for crop storage. Yet, these crops are represented only by grains and no remains of husks have been found. An experimental charring of rice suggests that the archaeologically retrieved rice in this study was charred without palea and lemma. The relatively small size of the pits, along with the absence of crop husks, implies that these crops were in the final stage of the storage, immediately before consumption.