Once a major shipping port for Trelawny’s thriving banana and sugar industries, Rock was the sister town to Martha Brae in the 18th century when that town was the parish capital. Located within the Martha Brae delta, at the point where the river enters the Caribbean Sea, Rock lies on the edge of the Luminous Lagoon, an enthralling body of water that glistens and glows when the microscopic organisms that live on the surface of the water are disturbed. In the 18th century, there was a wharf at the Luminous Lagoon used by small ships carrying goods from larger vessels docked in the harbour. These small ships would carry the bulk of imported goods inland up the river to Martha Brae and carry sugar and other produce back down the river. Eventually, when Falmouth replaced Martha Brae as the capital, Rock began its decline in importance, and has since become a sleepy fishing village on the outskirts of the increasingly popular Trelawny Beach resort area.

The Luminous Lagoon is certainly one of the most spectacular naturally occurring phenomena in Jamaica. At night, the water seems to sparkle and glisten when disturbed, as millions of microscopic dinoflagellates called Pyridium Bahamene that live on the surface of the water produce an eerie glow, reflecting the outlines of fish and other objects in the water. This lagoon is said to be the largest and most brilliant of only three in the Caribbean, and one of only a handful on the planet, a small fact that continually attracts and awes visitors and scientists from around the world.

Reggae To Wear, a internationally acclaimed Jamaican-made resort couture line is produced in Rock. The Reggae To Wear factory, where fabrics are hand printed and garments are assembled daily, is open for tours, and pieces from the line make for exciting one-of-a-kind souvenirs and gifts.

Say hello to Jerry, who operates a tour of the Luminous Lagoon from the Glistening Waters Marina, is a most interesting character. On his tours, he gives an extensive account of why the water sparkles, and as he boasts to all his customers, "I have never lost a client in this harbour..." Jerry is also working on his singing career, and will, upon request, perform covers of his favourite Bob Marley tunes. Feel free to sing along, even if you don’t know the words!