Hidden and named by caching_clayton. You are searching for a small silver metal tube, bigger than a nano but smaller than most bison tubes. It's hanging on a little chain. Caching_clayton says don't fall and it's not on the bridge. Do be careful as you search.
Pnpuvat_pynlgba vfa'g tvivat nal uvagf ba guvf bar, ohg gurer'f rabhtu vasbezngvba ba guvf pnpur cntr gb tvir lbh na vqrn bs ubj vg'f uvqqra naq jurer gb ybbx.