John Pint details the best hikes from San Cristóbal de las Casas in Chiapas, whether for birdwatching or other eco-friendly pursuits. Add to this the colorful markets, excellent cafes and restaurants, centuries-old churches and colonial buildings, and the living cultures of the Tzotzil and Tzeltal Maya communities in the surrounding highlands, and you have a city that is hard to resist. And then there are the trails.