Keywords geologic park;paleovolcano;rhyolite prismat ic joint;basalt prismatic joint;ancient city remains of the Yehe;ancient city remains of the Yan Country of Erlong Lake;

• 地质公园;古火山;流纹岩柱状节理;玄武岩柱状节理;叶赫古城遗址;二龙湖燕国古城遗址;