Baneful Bridge is a location in Sundered Pass near Refuge Cabin A, Lotte's Rest, while following the southern section of the main mountain road. Ptarmigan can sometimes be found between the bridge and the cabin, along with a ravaged Deer Carcass.
A hidden path can be accessed by walking off the right side closest to the tunnel, and leads down to a Rope Climbing section leading to Seedling Spring. Going up the mountain leads to a hidden cliff overlook containing a Frozen Corpse and a Backpack.
The bridge from the hidden cliff edge