Not to be confused with the Flint Pickaxe, the Flint Axe is a very strong Axe tool in Winter Burrow. You can use to swiftly cut down enemies, trees, logs, and pesky thorny vines that keep getting in the way of exploring.
To get the Flint Axe in Winter Burrow you must complete the 'Cook a Healing Stew for Aunty' quest within Moss' quest chain. As a reward for completing this quest, Aunty will give you the crafting recipe for the Flint Axe.
Here are the steps you need to take to get the Flint Axe in Winter Burrow:
Once you've given Aunty the Mushroom Stew, you'll learn the crafting recipe for a Flint Axe.
Once you've gotten the Flint Axe crafting recipe from Aunty you can visit your woodworking crafting bench in your burrow to start making it.