1THE 2005 TIANKENG INVESTIGATION PROJECT IN CHINA1-62TIANKENGS IN THE KARST OF CHINAZHU Xue-wen, CHEN Wei-hai7-243TIANKENGS OF THE WORLD,OUTSIDE CHINA25-344TIANKENG:DEFINITION AND DESCRIPTIONZHU Xue-wen, Tony WALTHAM35-425LARGE COLLAPSE CHAMBERS WITHIN CAVES43-456TURLOUGHS AND TIANKENGS:DISTINCTIVE DOLINE FORMS46-487GIANT DOLINES OF THE MULLER PLATEAU,PAPUA NEW GUINEA49-588CAVE UN-ROOFING AS A LARGE-SCALE GEOMORPHIC PROCESS59-669SOME LARGE DOLINES IN THE DINARIC KARST67-7010HYDRAULIC PROCESSES IN THE ORIGIN OF TIANKENGS71-7811COLLAPSE PROCESSES AT THE TIANKENGS OF XINGWEN79-8312SIZE SCALES FOR CLOSED DEPRESSION LANDFORMS:THE PLACE OF TIANKENGS84-9213DISCOVERY OF EROSIONAL TIANKENG IN HOUPING, WULONG AND ITS VALUE OF SCLENCE AND TOURISMZHU Xue-wen93-9814CHARACTERISTICS AND EVOLUTION OF SANQIAO NATURAL BRIDGES KARST SYSTEMS IN WULONG,CHONGQINGCHEN Wei-hai, ZHU De-hao, ZHU Xue-wen, HUANG Bao-jian99-10515EVALUATION ON LANDSCAPE FEATURES AND WORLD NATURAL HERITAGE VALUE OF WULONG KARST IN CHONGQINGCHEN Wei-hai, ZHU Xue-wen, ZHU De-hao, HUANG Bao-jian106-112