During World War II, many pilots of both Allied and Axis aircraft met their fate in the peaks of the high mountains across Wales. This book covers the various such aircraft crash sites found in the area south of the latitude of Brecon, which from east to west includes the Black Mountains, Brecon Beacons, to south of Llandoverty and the Presceli Hills in the west. Appendices include a full list of high-ground military losses and memorials to those who perished, as well as a bibliography.