BIG blow down on PCT Section “O” just up from Cabin Creek bridge crossing or just down from top (convergence of several FS Roads 38N94/38N92/39N21, PCT crosses over forest service road 39N21 at the top and convergence of roads before heading up to hike over Girard Ridge.) Hikers can scramble over or under but impassable with horses… Was riding this section on horseback and had to turn around and back track A BIG bummer…