Hero's Path Mode

is a mode in introduced as part of  DLC pack.

Overview
BotW: tracks every step BotW: has taken during the last 200 hours. This path appears on the Map as a green line that follows Link's steps. The process can be sped up, paused, and skipped.

Upon obtaining and opening the BotW:'s BotW:, a notice will appear informing BotW: that BotW: has been unlocked.