Pass through charming towns and villages and feel the excitement of crossing the river on a hand crank ferry before arriving at the car park. Use the modern bathroom and get some bottled water. Start the walk and climb to the top of El Castillo.
See the stucco astronomical inscription of the Mayan gods and look across the border of Belize to Guatemala. Take an hour drive from Xunantunich to the foothills of the Maya mountains. Stop to use the modern bathroom facilities and have a nice lunch break.
Be outfitted with gloves, harnesses and helmets and get familiarised with the zipline. Zipline across the rivers and forest on lines that are up to 1000 feet long. Switch gear and outfits and prepare to get wet. Get a paddle, helmet, lights, and PFD from your guide.
Hike to the cave system with 100ft high ceilings. Paddle thru the cave systems, see many formations, stop for a swim, Continue downstream for another 20 minutes in the rainforest after the cave.