The Longyabeidong site lies at the confluence of the Shimen and Luohe rivers in Luonan county, Shaanxi province, and is ......

<正> 龙牙洞遗址位于陕西省洛南县东河村后山坡上(图一),包括两个处于同一高度、同一时代、相距约30米的洞穴-龙牙南洞和龙牙北洞......