About twenty one percent are dedicated to services, tourism and general commerce. For the Sierra Gorda area, tourism, especially ecotourism is a new and important source of income for the region. As the municipality contains many of the highest peaks of the Sierra Gorda, much of the area is covered by fog and clouds for at least part of the day. Natural areas for visitors include El Camposanto Viejo and El Cruz de Palo with camping, hiking and rustic playgrounds for children. Campamento Río Escanela Enclavado is located along the Escanela River with a path that leads to the Angostura Canyon and the Puente de Dios. The nearby townof Río Escanela is an old mining community surrounded by forest. The facility has cabins, camping area, showers, picnic tables, grills and food services. Campamento Las Trancas in Potrerillos is a camping location just outside the municipal seat. In November 2010, it installed the first extreme sporting facility in the Sierra Gorda, a zip-line which measures about one hundred meters and crosses a deep narrow canyon. One ecotourism site is in Cuatro Palos, a village of thirty homes just outside the municipal seat. It is a campground which is one of twelve founded by The Ecological Group, a service organization dedicated to promoting alternative economies based on ecologically sensitive technologies. About thirty women from the village work at the campground as a cooperative. The campground has dry toilets in which lime, sawdust and solar energy are used to produce compost. There have also been some solar panels installed.