A couple of hours from Cali, just off the Cali-Buernaventura road, lies the small town of San Cipriano, which has become one of Colombia's favourite backpacker hangout spots. The town is small and the locals especially friendly, and swimming in the river and going on nature walks are popular leisure activites. One can also go river tubing through the rapids (drifting in large infaltible tyres). The area is also good for birdwatching.
San Cipriano is well known for it's unique transportation system - to get to San Cipriano, one must travel by by small train carts (from nearby Cordoba) that move under the influence of both gravity and motorcycle power. It's a startling and memorable journey!