▲现今发现西藏最早的宫殿即聂赤赞普时期修建于雅隆河谷的雍布拉冈宫,是西藏最早出现的交通要塞之一,其建筑于一座山岗之上,具有明显的堡寨性质。由于这些堡寨大多修筑于人们居住的聚集部落或交通要冲地带,所以在交通上的功能不可忽视。它们一方面用于战争需要,另一方面也成为人们长途旅行跋涉过程中补充给养和休憩之所。这些众多堡寨的出现,使长距离的跋涉和交通成为可能。 ▲ It is now found that Tibet’s earliest palace, Ng Chezap, built in the Yarlung Valley, is one of the earliest traffic forts in Tibet. It is built on top of a hill with a clear fortress nature. Since most of these fortified villages are built by people living in tribes or traffic hubs, the function of transportation can not be neglected. On the one hand, they are used for the needs of war and on the other hand, they are also supplementary supplies and rest places for long journey trips. The advent of many of these fortresses made long-distance trekking and transportation possible.