AAC Publications - http://publications.americanalpineclub.org

South America, Southern Peru, Map of Part of the Cordillera Carabaya from the Survey of the New Zealand Andean Expedition, 1967

Map of Part of the Cordillera Carabaya from the Survey of the New Zealand Andean Expedition, 1967. We used a Kern DKM1 Theodolite. The heights and location of the main peaks within the range were determined by theodolite triangulation (approximately fourth order) which was connected to a Bench Mark in the main square of Macusani. A half mile long control base line was initially established in a North-South direction, a short distance above Base Camp in the Taype Valley. This base line was then extended by means of theodolite triangulation (braced quadralateral) to an East-West control base of approximately one mile in length and in turn through a further braced quadralateral to an extended control line between Destornillador (Screwdriver) and Nevada Zavala (C2). The latter extended base provided the primary control for the bulk of the mapping-work carried out. Azimuth control was obtained from a series of ex-meridian sun observations along the second base extension. The theodolite (weight approximately 7 lbs) was carried up Nevada Zavala (16,645 feet, Destornillador (18,184 feet) Ollachea Ritti (C3) (17,164 feet), Kimsa Quiro (17,989 feet), To-coccapac (18,435 feet), and Allinccapac (18,859 feet), and observations taken to all major observable summits together with a full panorama of photographs. The initial 25-mile triangulation closure connecting Macusani to the main network showed a vertical misclose of 3 feet. The heights of the peaks observed are all accurate to within ±3 feet of relative height.

A. G. PARTON, New Zealand Alpine Club