Mt. Moran as seen from Oxbow Bend in Grand Teton National Park If you’ve visited Grand Teton National Park, you are probably familiar with this picturesque view of Mt. Moran from Oxbow Bend. Mt. Moran is the most prominent of the northern Teton peaks, notable for its flat top, diabase dike (the vertical band of black diabase rock on the mountain’s east face), and five remaining glaciers. According to Grand Teton National Park, the amount of molten diabase in the visible part