High on the White River, Jamaica's heavenly Blue Hole is a vision and is an undisputed highlight in Ocho Rios. To reach this popular spot, make your way up a series of magical falls (one measuring 20ft high) and blue pools surrounded by forest, with ample opportunity to swim, dive and swing off ropes 15ft in the air and into the water. There is an entry fee to enter. The Blue Hole is open from 8am to 5pm. Guides accompany you through the cascades on a well-marked trail (with steps and ropes where necessary for safety). The tiny cave climb under one of the falls is safe but isn't for claustrophobes. The guides are excellent and are attentive to both kids and more senior visitors who might be uncertain on some of the climbs. For those who arrive unprepared, vendors sell jelly shoes at the entrance. There are also refreshment stands. Remember, take nothing you aren't happy to get wet. Safety at the Blue Hole While no official accounts of leptospirosis have been confirmed at the Blue Hole, they have been reported. The leptospirosis bacteria can occur in any body of water and is always a concern when doing water-based adventure activities. The bacteria can enter the body through the eyes and nose or via cuts or abrasions, or by swallowing contaminated water. Life jackets are also available for those who want to enjoy the falls but aren't strong swimmers.