A Comprehensive Guide to Historical Map and Aerial Imagery Tools for Taiwan

The Taiwanese mountaineering community has developed a handful of free tools that are useful when planning a trip through Taiwan's wilderness.

These tools can be used in advance to survey and plan, and some may be used offline while in the mountains to assist in navigation.

They are useful even if you're not fluent in Mandarin as long as you have decent reasoning skills, and they are free-to-use.