National Geographic : 1922 Feb
178 THE NATIONAL GEOGRAPHIC MAGAZINE THE GREATEST ASPHALT PRODUCER IN THE WORLD--PITCH LAKE, TRINIDAD The pirates often sought the shores of Trinidad to calk their boats with the pitch which was here so plentiful. Along Caribbean coasts it is reported that formerly quantities of the substance melted in the sun and then congealed in great heaps, resembling small islands. ( 'uIllshers t'foto service A CARIBBEAN CONTRIBUTION TO THE STREETS AND HIGHWAYS OF TIHE UNITED STATES The remarkable Pitch Lake of Trinidad furnishes a million dollars in revenue for its people each year, Columbus noted "that abundance of stone pitch that all the ships of the world might be therewith laden from thence." He found it excellent in trimming his vessels.