After several hours of walking the ancient sites in soaring temperatures and 100% humidity, jumping from the rock platform down into the cool, cool waters of the cenote is exhilarating and refreshing beyond belief. Swimming in one is a pure joy, but more of that later. A half hour collectivo ride out of Valladolid is one of the so called “new” seven wonders of the world, the extensive remains of the ancient Maya city of Chechen Itza. Paying our entry fee and ambling towards the first section of the city, the first thing that strikes us is the sheer number of visitors. It’s not even peak time of day yet…