At player level 39 the feature Treasure Map is unlocked. When you open this feature a choice of 4 different maps are shown. Treasure maps are rare items that are commonly found as a reward during events. Each map can give different rewards, the higher the rarity the better the rewards. When you select a map of your choice a picture appears on the left with a red cross. The picture shows a place somewhere in the wilds. When you find the place shown in the picture and are standing on the place of the red cross a button will appear asking to Start Digging. By clicking this button it will use up your map and either give you a reward or spawn an enemy for you to fight before you get your rewards.

This guide is sourced from yabusame.