The aim of the Cordillera Apolobamba '97 Expedition was to undertake explorative climbing on objectives that would provide new and first ascents. Due to the lack of activity in the Apolobamba until the late ’80s the potential for new routes in this region is extensive and accessible to mountaineers of moderate and advanced technical ability alike. Additionally, the weather between June and September is very stable resulting in the inevitability of achieving a great deal and not returning home disappointed. During the four weeks spent in Bolivia this Expedition scored up a total of 6 previously unclimbed summits, a new British route and finished with a 48hr round trip ascent of Bolivia's best known mountain, Illimani (6402m). Nothing climbed on this Expedition exceeded the Alpine grade of AD which is a tribute to the potential for lower grade climbers in the area. The ascent of Illimani is not described in the report (any guide to mountaineering in Bolivia worth its salt details the normal ascent), however, the financial report includes expenses incurred to climb the mountain. In addition to the climbing objectives a basic survey was carried out of the valley in which we were based and a number of items of equipment were tested on behalf of our sponsors. In writing this report I have tried to keep it concise and incorporate the most relevant information. It is probably best not to read the report cover to cover for fear of the potential Andean climber being tied up in the technical reports written for our sponsors and vice versa. As a form of reference, however, I hope it proves to be of great value for everyone and anyone who picks it up.