Luckily, a pickaxe is the initial item of the Northern Summit location, so it will not be difficult to get it. It's located in one of the first Northern Expedition camps that you can gradually reach.

Purchase Pickaxe for 5000C$ in Northern Summit (Image via Roblox) Upon finding the Shipwright NPC, take a left turn and go to the other side of the frozen water. It is located behind the Inn ...