Not with two but with one
In August, 2013, Alexander Biermann made the first one-legged ascent of “black smoke, white wings” Fb 7b+ in Avalonia (Wetter/ Germany). This short film show…
In August, 2013, Alexander Biermann made the first one-legged ascent of “black smoke, white wings” Fb 7b+ in Avalonia (Wetter/ Germany). This short film show…