Right across from the All About Bamboo IV knowledge.

See screenshots for ref.

The trees on in game map are very dense in this area, I suggest comparing the map on BDO Codex with the NODEWAR map in game (M). It allows you to see the roads.

VIII - https://bdocodex.com/th/theme/12372/

VII - https://bdocodex.com/th/theme/12377/

VI - https://bdocodex.com/th/theme/12376/

V - https://bdocodex.com/th/theme/12375/ (NPC Gapdol, near the bamboo fire and cooking pot)

IV - https://bdocodex.com/th/theme/12374/ (same area, northwest of the cooking pot, the storage area and the bamboo in bags)

III - https://bdocodex.com/th/theme/12373/ (Byukgye Island)

II - https://bdocodex.com/th/theme/12371/

I - https://bdocodex.com/th/theme/12370/ (Shimnidae forest node manager, one of the books on the tables behind her)