Fryxell is a small lunar impact crater that lies amidst the western inner ring of the Montes Rook. This crater is located on the Moon's far side, at the extreme edge of the region of the surface sometimes brought into view of the Earth due to libration. Even under rare conditions of favorable lighting and libration, this area would only be seen from the side amidst a rugged range of mountains. Thus this crater is best observed from orbit.