This tunnel is about 300 feet long and links Grand Sable with Byrea Bay.The tunnel was constructed by the British with the help of Slave labour in about 1815 to provide an access route for sugar exports.The estates north of Byrea were distributed to British settlers after the end of the Second Carib War in 1796 for the cultivation of sugar cane.The tunnel was a masterpiece of engineering skill for its time.
