High Quality Content by WIKIPEDIA articles! The Padre Canyon Incident was a skirmish in November of 1899 between a group of Navajo hunters and a posse of Arizona lawmen. Among other things, it was significant in that it nearly started a large-scale Indian war in Coconino County and it led to the expansion of the Navajo Reservation. It was also the final armed conflict during a land dispute between the Navajo and American settlers, as well as one of the bloodiest.