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Grwp o ddynion ar moto beics, Chwarel Cefndu, 1926 - yn y cyfnod yma uchelgais pob chwarelwr oedd cael moto beic - cyfleus i fynd i’r chwarel. Cyn hyn cerddent filltiroedd ar hyd y llwybrau ar draws y mynydd at eu gwaith. [A group of men on motorbikes, Cefndu Quarry, 1926 - in this period it was the ambition of every quarryman to own a motorbike; convenient for going to the quarry. Before this they walked miles along paths across the mountain to their work.]