Mike Roberts on the summit pedaplane of The Billboard, with Mt Rhea in background. The peaks of Western Sarnoff Range are composed of Late Cretaceous Byrd Coast Granite. On right is Boyd Glacier. Left is the Arthur Glacier. Far distant peaks:(centre) E. Sarnoff Mts. & (left) Denfield Mts. West Antarctica.: Louis Sass: Arctic & Antarctic photographs, pictures & images from Bryan & Cherry Alexander Photography.