建平镇海山皋村Jian Ping Zhen Hai Shan Gao Cun

不明，面积约4800 平方米。文化层厚度不详。采集有泥质和夹砂灰陶片，纹 饰有指压纹、绳纹、弦纹和菱形纹，器形有罐、盆、釜、 豆及板瓦、筒瓦。曾出土燕国刀币。

Unknown. Covering an area of about 4800 square meters. The thickness of the cultural layer is unclear. Clay and sand-tempered gray pottery sherds were collected, decorated with finger-pressed patterns, cord-marking, incised lines, and diamond patterns; vessel forms include jars, basins, fu-cauldrons, dou-vessels, and flat and semi-cylindrical roofing tiles. Yan-state knife coins have been unearthed here.