In a circular route with a "Low" degree of difficulty and approximately 7 km, the SET3 offers us a steep slope of 472 m, almost always by trails or dirt roads. With starting and ending points at the Alambre Environmental Park, the SET3 is quite interesting, as it allows the visitor to use the park as a base of exploration of the region, having a perfect area to spend the night. Places like the Aldeia da Piedade, the Três Aldeias (architectural sites), or the S. Pedro Chapel, can be appreciated by visitors.