巴蘭遺址為臺東縣定遺址，2003年以來的調查、研究，陸續披露公告區之房屋結構、墓葬及遺物。本文內容為2011年後於巴蘭遺址之持續調查、試掘、研究結果，重點在於確認遺址範圍，而其基礎來自於礫石結構之辨識。經全面調查公告區以外周邊區域，由礫石結構分布初步確認巴蘭遺址範圍約為2.5公頃。遺址包含公告區在內暫分為四區，於第一區至第三區發現及記錄之礫石結構、現象223處。礫石結構中包含許多近代開墾行為留下之二次堆積現象，因原始結構與二次堆積現象須作初步釐清辨識，故題目曰「礫石結構初探」。此外由第二區之試掘顯示，原始堆積與二次堆積錯雜分布之間，仍保留舊社家屋地板以下之原始堆積，包括地板及室內石板墓葬。礫石結構為家屋之重要局部構造，眾多礫石結構與地下堆積之研究將成為後續家屋、聚落模式研究之基礎。

It's a report of the field work held in 2011 at the Ba-lan designated site which existed between 1100B.P. to 600 B.P. in Taitung . The field work consisted of two parts. In the first part of the work, researchers attempted to indentify the site area by investigation and then differentiated the whole area estimated 25,000 m^2 to 4 sections named section1 to section 4. on research purpose .The archaeological work team discovered and recorded 223 pebble structures classified into 7 types in section 1 to section 3. Among the pebble structures registered, some are secondary structures constructed by modern farmers, and most of them are original remains from ancient household, such as stone wall, pillars, floor and interior slate coffin. In the second part of the work, the archaeologists also took excavation in a small area to evaluate prehistory stratum conserved at the Ba-lan site.