早在原始社会时期，古代巴人部落选择武落山定居，笔者认为，除了依山傍水，洞穴多还俱足丰富的生活来源。
O O B-Time I-Time I-Time I-Time I-Time I-Time O B-Time I-Time B-Organization I-Organization I-Organization I-Organization O O B-Location I-Location I-Location O O O B-Person I-Person O O O O O O O O B-Thing O B-Location I-Location O O O O O O O O O O O O