30 day Challenge day 9, The relic

Day 9 is here :)
This time, it is the relic / dungeon reward. It is the "Cartographers feather"

This feather was supposedly used by a legendary adventuress. She was the first to trravel the entire known continent and the one who made the first, precice maps. Her maps, or better sayed, copies and replica of them are still used. Some of them by our adventurer as well. Besides the maps and some legends of her travels,  more information about the live of the adventuress is lost. What secrets this ancient tool of scripture might hold ?