Dendrochronology, the study of annual rings in woody plants, has developed into a useful tool for a number of different fields of study. Based on the interaction of trees and the climate, it is possible to use tree-rings as proxy data in reconstruction of past climates and river runoff. It has been a dating tool of archaeologists. The value of dendrochronology in fire history research has the potential of providing important data over and beyond the dating of fire scars.