Foolishly, I opted for the four-day hike to the Lost City in the Tayrona National Park. There is a more 'comfortable' five and even six-day excursion available. Were I ever to do this again, I'd do the five-day adventure. You learn pain and suffering on this four-day hike, but also how to adapt to conditions that most people have not experienced in their lives and how to find joy in the smallest of postitive situations and discoveries. I got into this 'gym fit', and that certainly helped, but finally my age, and probably packing too heavy, went against me. Two solid days of rain didn't help. It was, and I am probably speaking for most, if not all, an unforgettable adventure that at least I am very happy to have participated in.