The bus pulls away from St. George’s harbor with a soft hum, island air pressing through the open windows. Plantations and hills tilt past in layers of green; an attendant points to a jagged ribbon of waterfall ahead and within minutes the group slips from asphalt into damp trailhead light. At Concord Falls the river seems to have a will of its own—water lurches over black rock, cool spray puncturing the heavy Caribbean air—and the guide waits while visitors test the pools with tentative toes before the first confident plunge.