When the area is clear you can collect several large souls, and in the cave at the back you can find the Earth Seeker greataxe. Keep your distance, and when they're momentarily stunned after their attacks move in to strike back.
There are multiple routes through the area, but they all lead the same way and eventually bring you to a large bell wedged in the ground - from here just head straight up the slope. Head up the slope and under the fallen tree, dealing with the Followers as you go.
If you want to backtrack a little or need help with other parts of the DLC, then see our Dark Souls 3: Ashes of Ariandel guide and walkthrough. Ashes of Ariandel area Snowy Mountain Pass comes after travelling through the Corvian Settlement area, and acts as the last proper area before the final boss fight.